MXPA01003547A

MXPA01003547A - Bridged metal complexes

Info

Publication number: MXPA01003547A
Application number: MXPA/A/2001/003547A
Authority: MX
Inventors: Francis J Timmers; T Patton Jasson; D Devore David; Arthur J Ashe Iii; Xinggao Fang; D Patrick Green; Kevin A Frazier
Original assignee: The Dow Chemical Company; The Regents Of The University Of Michigan*
Priority date: 1998-10-08
Filing date: 2001-04-06
Publication date: 2001-12-04

Abstract

A Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing electron donating group, especially an amido group.

Description

COMPLEXES OF METAL IN BRIDGE DESCRIPTION OF THE INVENTION This invention relates to certain bridging Group 4 transition metal complexes possessing a unique bridging structure and in olefin polymerization catalysts obtained from said complexes. In one form, this invention modalizes Group 4 transition metal complexes containing a single bridged or divalent ligand structure having two ligands attached to delocalized, anionic p linked thereto. In a second embodiment, the invention relates to transition metal complexes of type 4 containing a single bridged ligand containing one of the delocalized, anionic, p-linked portions above and an amido or anionic phosphide moiety. In a third embodiment, the invention relates to Group 4 transition metal complexes containing a single bridged ligand containing two anionic amido and / or phosphido groups. In all cases, the only bridge consists of either boron or aluminum atoms, which are further bound with nitrogen-containing groups. In Angew. Chem. Int. Ed. Enql. 36, 21, p. 2338-2340 (1997) and in Phosphorus, Sulfur, and Silicon, 124 & 125, p. 561-565 (1997) boron bridged ferrocenphanes substituted with amido to form poly (ferrocenes) through ring-opening polymerization. The synthesis and characterization of the metal of! Group 1 and 2 and tin complexes of 1,2-bis (dimethylamino) -1,2-di-9-fluorenyldiborans are described in Chem. Ver., 127, p. 1901 -1908, (1994). The diborans that have a similar structure for those employed in the previous study were described by the same researchers in Eur. J. Inorg. Chem., P. 505-509 (1998). Ferrocenphane derivatives of bisborans similar for studies of additional molecular property were described by L Organomet. Chem .. 530 p. 1 17-120 (1997). In Organometallics. 16, p. 4546-4550 (1997) describes boron bridged metallocene complexes including boron dimethyl sulphide and phosphine adducts for possible use in Ziegler-Natta type olefin polymerizations. Non-bridging metallocenes, such as 1-t-butyl-4, 4-bis (? 5-cyclopentadienyl) -2- (2, 2,6,6-tetramethyl-piperidino) -1 -aza-2- bora-4-titana-cyclobutane, are described in Chem, Ver. (1987). 120 (5), 863-5. In the patent literature, bridging metal complexes for use as olefin polymerization catalyst components, including complexes such as those containing one or more boron atoms in the bridge are generally described by EP-A-416,881. 5 and WO 98/39369. Figures 1 and 2 are the crystal structures (ORTEP) of the complexes of Examples 2 and 5, respectively. The present invention relates to certain bridging Group 4 transition metal complexes and to polymerization catalysts obtained from such complexes corresponding to the following formulas Formula 1 or Formula 2 wherein: M is titanium, zirconium or hafnium in the oxidation state +4, +3 or +2; Y1 and Y2 are independently a p-linked, cyclic or non-cyclic, anionic, NR1, PR1 group; NR 2 or PR12; Z is boron or aluminum; Q is a neutral, anionic or dianionic ligand group depending on the oxidation state of M; j is 1, 2 or 3 depending on the oxidation state of M and the electronic nature of Q; T independently of each occurrence is: R1 is independently of each occurrence hydrogen, a hydrocarbyl group, a tri (hydrocarbyl) siliio group, or a tri (hydrocarbyl) silylhydrocarbyl group, said R1 groups containing up to 20 carbon atoms not counting hydrogen; R5 is R1 or N (R) 2; and two groups R1 together or one or more groups R1 together with R5 may optionally be joined to form a ring structure. It is understood that the above metal complexes can exist as dimers and that one or more Lewis bases can optionally be coordinated with the complex or its dimer and that when Y1 or Y2 are the neutral ligands, NR1 or PR12, the link to M is a covalent coordinate link in place of a covalent bond. In addition, when T is R12N and Z is boron, the bond between T and Z, particularly in the compounds of formula 1, may possess double bond characteristics, ie, the resulting group may be more accurately represented by the formula R12N In addition, in accordance with the present invention, unique ligand structures of the following formulas are provided: Formula 1 A or Formula 2A wherein Z, T, R1 and R5 are as defined above; Y1 and Y2 are a cyclic or non-cyclic anionic p-linked group, NR1, or PR1 and R4 is hydrogen or a trimethylsilyl group. Said ligand groups of Formula 1 A or 2A are easily prepared by contacting sources of the anionic groups (Y1 R4) ~ and (Y2 R4) ~, particularly the Grignard solution or its alkali metal salts, with the compound TZY3 or (TZ) 2Y32, where Y3 is a leaving group, especially halide, either as net reactants or in an inert solvent, using temperatures from -100 ° C to 150 ° C. Further, according to the present invention there is provided a process for preparing complexes of Formula 1 and Formula 2 in a high racemic purity in the formal oxidation state +2 by contacting ligand structures of Formula 1 A or 2A, wherein R 4 is trimethylsilyl, or deprotonated dianionic derivatives of ligand structures of Formula 1 A or Formula 2A, with a Group 4 precursor of Formula 3: Formula 3 where M and Y3 are as defined above. R6 independently of each occurrence is hydrogen, a hydrocarbyl group, a tri (hydrocarbyl) silyl group, a tri (hyd rocarbyl) silylhydrocarbyl group, said R6 groups containing up to 20 carbon atoms not counting nitrogen; and LB is a Lewis base, especially an ether, amine or phosphine of up to 20 carbons.

The reaction is desirably conducted in an inert solvent, especially an aliphatic or aromatic hydrocarbon or ether, using temperatures of -100 ° C to 150 ° C. This technique is similar to that described in the patent application of E. U. A. 265,641, filed March 10, 1999, which differs in that different starting reagents are used. In addition in accordance with the present invention, suitable catalyst compositions are provided for the polymerization of polymerizable addition monomers comprising one or more metal complexes of Formula 1 or 2 in combination with one or more activating or activated cocatalysts through the use of an activation technique. Finally, according to the present invention there is also provided a polymerization process comprising contacting one or more polymerizing addition monomers with a catalyst composition comprising one or more metal complexes of Formula 1 or 2 in combination with one or more activating cocatalysts or activated by the use of an activation technique. The polymerization is preferably carried out under solution, slurry, slurry or high pressure process conditions, and the catalyst composition or its individual components can be used in a heterogeneous state, ie, a supported state or in a homogeneous state as it is dictated by the process conditions. The catalyst of the present invention can be used in combination with one or more additional catalysts of the same or different nature either simultaneously or sequentially in the same reactor or in separate reactors. The catalyst compositions according to the present invention possess improved catalytic efficiencies and improved thermal stability allowing their use under higher operating temperatures compared to catalysts comprising conventional metal complexes. All references to the Periodic Table of the Elements herein should refer to the Periodic Table of the Elements published and authorized by CRC Press, Inc., 1997. Also, any references to a group or groups must be to groups or groups reflected in this Periodic Table of the Elements using the IU PAC system to list groups. By the term "attached to p" as used herein, it is meant that the union occurs through an interaction involving delocalized electrons. Finally, the term "leaving group" represents a ligand that is easily displaced by another ligand under conditions of ligand exchange. The transition metal complexes of Group 4 herein contain a unique bridging group: (T-Z) or (T-Z) 2, which imparts improved catalytic properties when used in combination with one or more activating cocatalysts or activation techniques in the presence of polymerizable addition monomers. Although not wishing to be bound by theory, it is believed that the improvement in the catalytic properties of said complexes may be due to the electronic properties of the portions ZT, Y1 and Y2.

Preferred Group 4 transition metal complexes of the present invention, which correspond to formula 1 or 2, are represented by formulas 4, 5, 6, 7, 8 and 9: Formula 4 Formula 5 Formula 6 Formula 7 Formula 8 Formula 9 where M, Z, T, Q and j are as defined above; R2 is hydrogen, or a hydrocarbyl, haiohydrocarbyl, dihydrocarbylamino-hydrocarbyl, tri (hydrocarbylsilyl) hydrocarbyl group, If (R3) 3, N (R3) 2, or OR3, of up to 20 carbon atoms or silicon, and optionally two adjacent R2 groups may be joined together, thereby forming a fused ring structure, especially an indenyl ligand or a ligand substituted indenyl; Y R3 is independently hydrogen, a hydrocarbyl group, a trihydrocarbylsilyl group or a trihydrocarbylsilylhydrocarbyl group, R3 having up to 20 atoms not counting hydrogen. When M is in the +4 oxidation state, j = 2 and Q independently of each occurrence is halide, hydride, hydrocarbyl, silylhydrocarbyl, hydrocarbyl oxide, dihydrocarbylamide, said Q group having up to 20 carbon atoms without counting hydrogen. Alternatively, two Q groups can be joined together to form an alkanediyl group or a diene ligand of 4 to 40 carbon atoms conjugated, which is coordinated to M in a metallocyclopentene form. When M is in the +3 oxidation state, j = 1 and Q is either 1) or a monovalent anion stabilizing ligand selected from the group consisting of alkyl, c-chloroalkyl, aryl, silyl, amido, phosphido, alkoxy groups , aryloxy, sulfide, and mixtures thereof, and still further substituted with a substituent containing amine, phosphine, ether or thioether capable of forming a covalent coordinate bond or chelating linker with M, said ligand having up to 50 atoms not counting hydrogen; or 2) a hydrocarbyl group of 3 to 10 carbon atoms comprising an ethylenic unsaturation capable of forming a β3 bond with M. When M is in the oxidation state +2, j = 1 and Q is a neutral conjugated diene, optionally substituted with one or more tri (hydrocarbyl) silyl or tri (hydrocarbylsilyl) hydrocarbyl groups, said group Q having up to 40 carbon atoms and forming a complex of p with M.

Specific examples of the above metal complexes wherein M is in the oxidation state +4 are shown below in formulas 4a-9a, where the definitions of, Z, R1, R2, and R3 are as presented above : Formula 4a Fopnula 5a Formula 6a Formula 7a Formula ßa Formula 9a where Q, independently of each occurrence is a halide, hydrocarbyl, hydrocarbyloxy or dihydrocarbylamide group up to carbon atoms not counting hydrogen, or two Q groups together form a diene ligand of 4 to 20 carbon atoms coordinated with M in a metallocyclopentene form. Most preferably, Q independently of each occurrence is chlorine or a hydrocarbyl group of 1 to 6 carbon atoms, or two Q groups together form a 2-methyl-1,3-butadienyl or 2,3-dimethyl-1,3-butadienyl group.

Specific examples of the above metal colas, wherein M is in the oxidation state +3 are shown below in formulas 4b-9b, where the definitions of M, Z, R1, R2, and R3 are as presented previously: Formula 4b Formula 5b Formula 6b Formula 7b Formula 8b,? Formula 9b wherein Q, in each occurrence is a monovalent anion stabilizer ligand selected from the group consisting of alkyl, cycloalkyl, aryl and silyl groups, which are further substituted with one or more amine, phosphine or ether substituents capable of forming a covalent bond coordinate or chelator link with M, Q having up to 30 non-hydrogen atoms; Q is a hydrocarbyl group of 3 to 10 carbon atoms comprising an ethylenic unsaturation capable of forming a β3 bond with M. The most preferred examples of said Q ligands are 2-NN-dimethylaminobenzyl, allyl, and 1-methyl-allyl . Specific examples of the above metal complexes, wherein M is in the oxidation state +2, are shown below in formulas 4c-9c, wherein the definitions of M, Z, R1, R2, and R3 are as follows. previously presented: Formula 4c Formula 5c Formula 6c Formula 7c Formula 8c Formula 9c wherein Q, in each occurrence, is a conjugated diene of another, optionally with one or more tri (hydrocarbyl) silyl groups or tri (hydrocarbyl) silylhydrocarbyl groups, said Q having up to 30 carbon atoms not counting the hydrogen and forming a complex p with M. The most preferred Q groups are 1,4-diphenyl-1,3-butadiene, 1,3-pentadiene, 3-methyl-1,3-pentadiene, 2,4-hexadiene, 1-phenyl-1, 3-pentadiene, 1,4-dibenzyl-1,3-butadiene, 1,4-ditolyl-1,3-butadiene, 1,4-bis (trimethylsilyl) -1,3-butadiene, and 1,4-dinaphthyl- 1,3-butadiene.

Preferably, in the above formulas, R1 independently of each occurrence is alkyl of 1 to 4 carbon atoms, or phenyl, most preferably methyl or isopropyl, preferably methyl, Y1 and Y2 both being inden-1-yl, 2-alkyl- 4-arylinden-1-yl, or 3-alkylinden-1-yl, or Y 1 is cyclopentadienyl or cyclopentadienyl substituted with alkyl and Y 2 is fluorenyl; Z is boron and Q is halide, alkyl, N, N-dialkylamido or 1,4-diphenyl-1,3-butadiene (said alkyl or aryl groups having up to 10 carbon atoms). Still most preferably in the formulas 4a-c and 7a-c, M is zirconium or hafnium and R1 is methyl or isopropyl, most preferably methyl. During the synthesis of these complexes, the use of R1 methyl groups provides high, usually quantitative, performances of the isomer rae. In formulas 5a-c, 6a-c, 8a-c and 9a-c, M most preferably is titanium, Z is boron and R 1 is alkyl or phenyl of 1 to 4 carbon atoms, most preferably methyl or isopropyl. Highly preferred metal complexes are those of the formulas 4a-c and 7a-c wherein Y1 and Y2 are both inden-1-yl, 2-methyl-4-phenylidene-1-yl, 3-isopropylidene-1-yl groups , or 3-t-butylinden-1-yl, especially compositions comprising more than 90% of the rae isomer. The specific but limiting metal complexes included in the invention described in the above formulas are: dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium dichloride; Dimethylamidoboran-bis-? 5-cyclopentadienyl dimethyl zirconium; Dimethylamidoboran-bis-? 5-cyclopentadienyl-zirconium bis-dimethylamide; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 2,3-dimethyl-1,3-butadiene dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 2-N, N-dimethylaminobenzyl of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; allyl of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; ? 4-2,4-hexadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 4-1-phenyl 1-1, 3-pentadienode dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; 5-1, 3- pentadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl zirconium; dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium dichloride; dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl dimethyl zirconium; bisdi methylamide a of dimethyiamidoboran-bis-? 5-n-butylcycline open tad ieni i zircon io; 2-methyl-1, 3-b utadiene of d i meti midoboran-bi s-? 5-n -b uti! Cyclopentadienyl zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium; zirconium 2-N. N-dimethylaminobenzyl of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl; dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl allylic zirconium; 4-1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butyl-cyclopentadienyl zirconium; ? 4-2,4-hexadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium; ? -1,4-dinaphthi-1, 3-butadiene of dimethylamidoboran-bis-? 5-n-butyl-cidopentadienyl zirconium; 4-1, 3-phenyl-1,3-pentadiene of d imeti lamidoboran-bis-? S-n-butyl-cyclopentadienyl zirconium; 5-1, 3-pentadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium; dimethylamidoboran-bis-? 5-inden-1-zirconium dichloride; dimethyl zirconium deimethylamidoboran-bis-? 5-inden-1-yl bis-dimethylamide of ethylamidoboran-bis-? 5-inden-1-yl iricon; 2-methyl-1,3-butadiene of ethylamidoboran-bis-? 5-inden-1-zirconium; 2,3-dimethyl-1, 3-butadiene of dimethylamidoboran-bis-? 5-inden-1-zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5-inden-1-yl; dimethylamidoboran-bis-? 5-inden-1-yl allylic zirconium; 4-1,4-Diphenyl-1,3-butadiene of imethylamidoboran-bis-? S-inden-1-yl zirconium; 4-2,4-hexadiene of dimethylamidoboran-bis-? 5-inden-1-yl zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5-inden-1-yl zirconium; 4-1-phenyl-1, 3- pentadiene of dimethylamidoboran-bis-? 5-inden-1-yl zirconium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5-inden-1-yl zirconium; dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-, 5- (2-methylinden-1-yl) dimethyl zirconium; bis-dimethylamide of dimethylamidoboran-bis-? s- (2-methylinden-1-yl) zirconium; 2-methyl 1-1, 3- butadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) z? Rconium; 2,3-dimethyl-1,3-butadiene dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl); dimethylamidoboran-bis- [5- (2-methylinden-1-yl) allylic zirconium; 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyIinden-1-yl) zirconium; 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; ? -1-phenyl-1,3-pentadiene dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; ? -1,3- pentadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-methyl-4-phen-linden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-methyI-4-phenylinden-1-yl) dimethyl ammonium zirconium; dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium bisdimethylamide; 2-methyl-1, 3"-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2, 3-d i meti 1-1, 3-butadiene dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-ii) zirconium; 2-N, N-dimethylaminobenzyl zirconium dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); allylic zirconium dimethylamidoboran-bis-? s- (2-methyl-4-phenylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-2,4 hexadiene dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; ? -1,4-dinapht-1, 3-buta-diene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-f eni linden-1-yl) zirconium; 4-1,3-pentadiene dimethylamidoboran-bis-? 5- (2-methyI-4-phenylinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) dimethyl ammonium zirconium; bis-dimethylamide of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 2, 3-d i meti 1-1, 3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylnden-1-yl) zirconium; 2-N-dimethylaminobenzyl zirconium dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl); dimethylamidoboran-bis- [5- (2-ethyl-4-phenylinden-1-yl) allylic zirconium; 4-1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 5-2,4-hexadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-4,4-dina f ti 1-1, 3- butadiene of dimethylamidobora n-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; ? -1,3-dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis- [5- (2-isopropyl-4-phenylinden-1-yl) dimethyl ammonium zirconium; bisdimethylamide of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenyIinden-1-yl) zirconium; 2-methyl-1, 3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyI-4-phenylniden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2- N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl); allylic zirconium dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl); 4-1,4-Difyl nyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyl) 4-phenylinden-1-yl) zirconium; 4-4-hexadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 4-1-phenyndi-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 4-1-3-pentadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) dimethyl ammonium zirconium; bis-dimethyiamide of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); allylic zirconium dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; ? 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; ? -1, 4-d i naph ti 1-1, 3-b uta die no of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylnden-1-yl) zirconium; 4-1-3-pentadiene dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl dimethyl zirconium); bis-dimethylamide of dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-l) zirconium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3, 5-trif-1-uoromethyl) -f in -linden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trif-1-uoromethyl) -inyl-1-yl); dimethylamidoboran-bis- [5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) allylic zirconium; 4-1-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trif-1-uoromethyl) -fenyl-inden-1-yl) -zirconium; ? -2,4-hexadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phen? linden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-4,3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phen-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl dimethyl zirconium); bis-dimethylamide of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trif-1-uoromethyl) f in -linden-1-yl) zirconium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) f in β-linden-1-yl); allylic zirconium dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3, 5-trif luorom eti l) f in β-linden-1-yl); 4-4,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 5-2,4-hexadiene of dimethylamidoboran-bis-? S- (2-ethyl-4-bis- (3,5-trifluoromethyl) f in -linden-1-yl) zirconium; ? -1,4-dinaphthif-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1-pheny1-1-3-pentadiene dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phen-linden-1-yl) zirconium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoro methyl) fe nyl i nden-1-yl) zirconium; dimethylamine idoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium dichloride; Dimethyl dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoro- and methyl-methylene) phen-linden -yl) zirconium; bis-dimethylamide of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? S- (2-isopropyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? S- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenylniden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenylinden-1-yl); allylic zirconium dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 1,4,4-hexadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoro-methyl) phenyl-inden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phen-linden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phen-linden-1-l) zirconium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenylniden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) dimethyl zirconium; bisdimethylamide of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 2-methyl-1, 3-butadiene of dimethylamidoboran-bis-? S- (3-isopropylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl); allyl zirconium dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-2,4 hexadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1, 3-pentadiene of di meti lam idoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium dichloride; dimethy zirconium dimido! amidoboran-bis-? 5- (3-t-butylinden-1 -iio); bis-dimethylamide of dimethylamidoboran-bis ~ 5- (3-t-butylinden-1 -i I) zirconium; 2-methylene-1,3-butadiene of d-methylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl); dimethylamidoboran-bis- [5- (3-t-butylinden-1-yl) allylic zirconium; 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-1, 3- pentadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; diisopropylamidoboran-bis-? 5-cyclopentadienylzirconium dichloride; diisopropylamidoboran-bis-? 5-cyclopentadienyl dimethyl zirconium; bis-dimethylamide of diisopropylamidoboran-bis-? 5-cyclopentadienyl-zirconium; 2-methyl-1,3-butadiene diisopropylamidoboran-bis-? S-c? Clopentadienylzirconium; 2,3-dimethyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-cyclopentad? Enylzirconium; Zirconium 2-N, N-dimethylaminobenzyl diisopropylamidoboran-bis-? 5-cyclopentadienyl; allylic zirconium diisopropylamidoboran-bis-? 5-cyclopentadienyl; ? -1,4-diphenyl-1,3-butadiene diisopropylamidoboran-bis-? 5-cyclopentadienylzirconium; ? 4-2,4- hexadiene diisopropylamidoboran-bis-? 5-cyclopentadienyl zircon? O; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5-cyclopentadienylzirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5-cyclopentadienylzirconium; 4-1 -3- pentadiene diisopropylamidoboran-bis-? 5-cyclopentadienylzirconium; diisopropylamidoboran-bis-? 5-inden-1-ylzirconium dichloride; dimethylic zirconium diisopropylamidoboran-bis-? 5-inden-1-yl; bis-dimethylamide diisopropylamidoboran-bis-? 5-inden-1-ylzirconium; 2-methyl-1, 3- butadiene of diisopropylamidoboran-bis-? 5-inden-1-yl-zirconium; 2,3-dimethyl-1, 3- butadiene of diisopropylamidoboran-bis-? 5-inden-1-ylzirconium; 2-N, N-dimethylaminobenzyl zirconium of diisopropylamidoboran-bis-? 5-inden-1-yl; allyl zirconium diisopropylamidoboran-bis-? 5-inden-1-yl; 4-1, 4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-inden-1-ylzirconium; ? -2,4-hexadiene di-iso-propyl lamido boran-bis-? 5-inden-1-ylzirconium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5-inden-1-ylzirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5-inden-1-yl-zirconium; 4-1, 3-pentadiene diisopropylamidoboran-bis-? 5-inden-1-yl-zirconium; diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium dichloride; diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) dimethyl zirconium; bisdim eti lamide diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 2-methyl-1, 3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-inden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyIinden-1-yl) zirconium; 2-N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 5-2,4-hexadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; ? -1,4-dinaphthyl-1, 3-butadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1 -yl) zirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 4-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium dichloride; dimethyl zirconium diisopropylamidoboran-bis-? s- (2-methyl-4-phenylinden-1-yl); bisdimethylamide diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-phen-linden-1-yl) zirconium; 4-4-hexadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylimid-1-yl) zirconium; ? 1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-4-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-4-dipentadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-f in I-linden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium dichloride; zirconium dimethyl diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); bis-dimethylamide diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-methi 1-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthiinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropyl to midoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); ? -1, 4-dife n? il-1, 3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; ? 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1,4-d-naphthyl 1-1, 3-butadiene of d-isopropyl amido boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; ? -1, 3-pentadiene diisopropylamidoboran-bis-? S- (2-methyl-4-naphthyllinden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethylphenyl) inden-1-yl) zirconium dichloride; diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-di methylphenyl) inden-1-yl) dimethyl zirconium; bis-dimethylamide diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-di methyl) in i I) inden-1-yl) zirconium; 2-Methyl-1, 3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethyl-phenyl) inden-1-yl) zirconium; 2, 3-d i meti 1-1, 3- butadiene of diisopropylamidoboran-bis-? S- (2-methyl-4- (3,5-di methi I phen i) inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethylphenyl) inden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethylphenyl) inden-1-yl); ? -1,4-diphenyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-m e ti I-4- (3, 5-di metilf in i I) inden-1-yl) zirconium; 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethylphenyl)? Nden-1-yl) zirconium; 4-1, 4-d-inafyl-1,3-b-utadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-d-methyl-en-yl) inden-1-yl) zirconium; d? -1-phenyl-1,3-pentadiene of iisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-dimethylphenyl) inden-1-yl) zirconium; 4-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-di-methylphenyl) inden-1-yl) zirconium; diisopropyl! amidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethylphenyl) inden-1-yl) zirconium dichloride; diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethylphenyl) inden-1-yl dimethyl zirconium); bis-dimethylamide diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethyl) enyl) inden-1-yl) zirconium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoro-methyl-methylene) inden-1-yl) zirconium; 2,3-Dimethyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl) I-4- (3,5-difluoro-methylmethyl in I) inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3, 5-difluoromethyl-enyl) ind en-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethylphenyl) inden-1-yl); ? -1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-il- (2-methyl-4- (3,5-difluoromethyl-enyl) inden-1-yl) zirconium; 4-2.4-hexadiene diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethyl) enyl) inden-1-yl) zirconium; ? -1,4-dinaphthyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethyl-enyl) inden-1-yl) zirconium; ? -1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethyl) in i I) inden-1-yl) zirconium; 1, 4-1, 3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4- (3,5-difluoromethylphenyl) inden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium dichloride; diisopropyamidoboran-bis-? 5- (2-ethyl-4-phenyl inden-1-yl) dimethyl zirconium; bis-dimethylamide diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 2- methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenyl-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenjJinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl); ? -1, 4-diphenyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-2,4 hexadiene diisopropylamidoboran-bis-? S- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-1, 4d-1-diphenyl-1,4-butadiene diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; ? -1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-1, 3-pentadiene diisopropylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium dichloride; diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) dimethyl zirconium; bis-dimethylamide diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2-methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; ? 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; ? -1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenyl-indene-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 4-1,3-pentadiene diisopropylamidoboran-bis-? S- (2-isopropyl-4-f eni I inden-1-yl) zirconium; diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium dichloride; dimethyl zirconium diisopropylamidoboran-bis-? s- (3-isopropylinden-1-yl); bisdimethylamide diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-4,4-hexadiene of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; d? 4-1, 3-pentadiene of iisopropyamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; diisopro-ilamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium dichloride; dimethyl zirconium of di? sopropylamidoboran-bis-? s- (3-t-butylinden-1-Uo); bisdimethylamide diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? S- (3-t-butylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl); allyl zirconium diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl); ? -1,4-Diphenyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (3-t-butylinden-1 -yl) zirconium; ? -1,4-dinaphthyl-1, 3-butadiene of diisopropylamidoboran-bis-? S- (3-t-butylinden-1-yl) zirconium; ? -1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; ? -1, 3 pentadiene diisopropyl amidoboran-bis-? 5- (3-t-butyl i nden-1 -iI) zirconium; diphenylamidoboran-bis-? s-cyclopentadienyl zirconium dichloride; dimethylamidoboran-bis-? 5-cyclopentadienyl dimethyl zirconium; diphenylamidoboran-bis-? 5-cyclopentadienii bis-dimethylamide zirconium; 2-methyl-1,3-butadiene of diphenylamidoboran-bis-? 5-cyclopentadienyl zirconium; 2,3-dimethyl-1,3-butadiene of diphenylamidoboran-bis-? 5-cyclopentadienyl zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis- ?: cyclopentadienyl; diphenylamidoboran-bis-? 5-cyclopentadienyl allylic zirconium; 4-1,4-Diphenyl-1,3-butadiene diphenylamidoboran-bis-? 5-cyclopentadienyl zirconium; gave? -2,4-hexadiene of phenylamidoboran-bis-? 5-cyclopentadienyl zirconium; 4-1,4-dinaphthyl-1,3-butadiene diphenylamidoboran-bis-? 5-cyclopentadienyl zirconium; d iii 4 '-1-phenyl-1,3-pentadiene of phenylamidoboran-bis-? 5-cyclopentadienyl zirconium; ? 5-1, 3- pentadiene of diphenylamidoboran-bis-? 5-cyclopentadienyl zirconium; diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium dichloride; diphenylamidoboran-bis-? 5-n-buty-cyclopentadienyl dimethyl zirconium; diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium bisdimethylamide; Diphenylamidoboran-bis-? 5-n-butyl-cyclopentadienyl zirconium 2-methyl-1,3-butadiene; 2, 3-dimethyl-1,3-butadiene of diphenylamidoboran-bis-? 5-n-buty-cyclopentadienyl zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl; diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl allylic zirconium; ? Diphenylamidoboran-bis- [5-n-butylcyclopentadienyl zirconium] -1,4-diphenyl-1,3-butadiene; 4-4-hexadiene of phenylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium; ? Diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium-1,4-dinaphthyl-1,3-butadiene; d? 4-1- phenyl-1,3-pentadiene of ifenylamidoboran-bis-? 5-n-butyl-cyclopentadienyl zirconium; Diphenylamidoboran-bis-? 5-n-butylcyclopentadienyl zirconium 5-1,3-pentadiene; diphenylamidoboran-bis-? 5-inden-1-ylzirconium dichloride; dimethyl zirconium dediphenylamidoboran-bys-γ-inden-1-yl; diphenylamidoboran-bis-? 5-inden-1-ylzirconium bis-dimethylamide; 2-methi-1-1, 3-butadiene of diphenylamidoboran-bis-? 5-inden-1-ylzirconium; 2,3-dimethyl-1, 3-butadiene of diphenylamidoboran-bis-? 5-inden-1-yl-zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis-? 5-inden-1-yl; diphenylamidoboran-bis-? 5-inden-1-yl allylic zirconium; 4-1,4-diphenyl-1,3-butadiene of diphenylamidoboran-bis-? 5-inden-1-ylzirconium; ? 4-2,4-hexadiene of ifenylamidoboran-bis-? 5-inden-1-ylzirconium; 4-1,4-dinaphthyl-1,3-butadiene of dif eni lam id oboran-bis-? 5- inden- 1- Mzirconium; gave? -1-phenyl-1,3-pentadiene of phenylamidoboran-bis-? 5-inden-1-yl-zirconium; 4-4,3-pentadiene of diphenylamidoboran-bis-? 5-inden-1-ylzirconium; diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium dichloride; diphenylamidoboran-bis- [5- (2-methylinden-1-yl) dimethylamido zirconium; Diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium bis-dimethylamide; 2-methyl-1-1, 3-butadiene of dif enylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 2, 3-d i meti 1-1, 3- butadiene of difie nilamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) 2-N, N-dimethylaminobenzyl zirconium; diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) allylic zirconia; Diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 4-1,4-diphenyl-1,3-butadiene; Diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium hexadiene; 4-1,4-dinaft? I-1, 3-butadiene diphenylamidoboran-bis? 5- (2-methylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of di-f-nylamidoboran-bis-? 5- (2-methyl-1-yl) zirconium; 4-1,3-pentadiene of diphenylamidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; di dieni i lam dimerboran-b? 's-? 5- (2-m eti l-4-phe linden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yio) dimethyl-zirconium; bís-d diphenylamidoboran-bis-? 5- (2-methyl-4-phenylimid-1-H) zirconium methylamide; 2-methyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2, 3-dimethyl-1, 3- butadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium 2-N, N-dimethylaminobenzyl; diphenylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yio) allylic zirconium; 4-1,4-Diphenyl-1, 3- butadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-f in I-line n-1-yl) zirconium; ? 4-2,4-hexadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-phenyIinden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene; 4-1-phenyl-1,3-pentadiene diphenylamidoboran-bis-? 5- (2-methyl-4-phe nylinden-1-yl) zirconium; 4-1, 3-pentadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-ethyl-4-phen-linden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) dimethylamidoboran-zirconium; bis-dim ethylamide of diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylimin-1-yl) zirconium 2-methyl-1,3-butadiene; Diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium 2,3-dimethyl-1,3-butadiene; diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) 2-N, N-dimethylaminobenzyl zirconium; allyl zirconium diphenylamidoboran-bis-? 5- (2-ethyl-4-pheny! inden-1-yl); ? Diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium-1,4-diphenyl-1,3-butadiene; 4-2,4-hexadiene of d-phenylamido bora n-bis-? 5- (2-ethyl-4-f-enyl i nden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-ethyl-4-phenylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene; Diphenylamidoboran-bis-? 5- (2-ethyl-4-phen? Linden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene; 4-1, 3-pentadiene of diphenylamidoboran-bis-? 5- (2-ethyl-4- phenyl! Inden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-isopropyl-4-f-enyl-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) dimethyl zirconium; bis-dimethylamide diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2-methylo-, 3-butadiene of diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium 2-N, N-dimethylaminobenzyl; diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) allylic zirconia; 4-1, 4-diphenyl I-1, 3- butadiene of diphenylamidoboran-bis-? S- (2-isopropyl-4-phenylinden-1-yl) zirconium; ? 4-2,4-hexadiene of diphenylamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1-yl) zirconium; ? Diphenylamidoboran-bis-? S- (2-isopropyl-4-phenylinden-1-yl) zirconium; 1,4-dinaphthyl-1,3-butadiene; d? 4-1 phenyl-1,3-pentadiene of ifenylamidoboran-bis-? 5- (2-isopropyl-4-f eni linden-1-yl) zirconium; ? - 1-pentadiene diphenyiamidoboran-bis-? 5- (2-isopropyl-4-phenylinden-1 -yl) zirconium; diphenylamido dichloride boran-bis-? 5- (2-methyl-4-naphthindenyl-yl) zirconium; dimethylamidoboran-bis-? s- (2-methyl-4-naphthylinden-1-yl) dimethyl zirconium; bis-dimethylamide diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-l-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium 2-methyl-1,3-butadiene; 2, 3-dimethyl-1, 3- butadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium 2-N, N-dimethylaminobenzyl; diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconib; Diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1, 4-diphenyl-1,3-butadiene; 4-2,4-hexadiene diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; 4-1-dinaphthyl-1,3-butadiene; Diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene; 4- 4-, 3- diphenylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium pentadiene; diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3, 5-trif-1-uoromethyl) -f in d-linden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl dimethyl zirconium); bis-dimethylamide diphenylamidoboran-bis-? 5- (2-metii-4-bis- (3,5-trifluoromethyl) phenyinden-1-yl) zirconium; 2-methyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3, 5-trifluo-rom eti-l) f eni I -inden- 1 -yl) zirconium; 2,3-Dimethyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trifluoromethyl) phenylinden-1-yl); diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) allylic zirconium; ? -1, 4-diphenyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; ? 4-2,4-hexadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-methyl-4-bi s (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1, 3-pentadiene of diphenylamidoboran-bis-? 5- (2-methyl-4-bis- (3,5-trifluoromethyl) phenylinden-1 -yl) zirconium; diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl dimethyl ammonium zirconium); bis-dimethylamide diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) zirconium 2-methyl-1,3-butadiene; 2, 3-d-imethyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) phenylinden-1-yl); diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) allylic zirconium; 4-1, 4-diphenyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-2,4-hexadiene of diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) zirconium; 4-1-dinaphthyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-ethyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; ? -1-phenyl-1, 3-pentadiene of diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 4-1, 3-pentadiene diphenylamidoboran-bis-? 5- (2-ethyl-4-bis- (3,5-trifluoromethylphenylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (2- dichloride isopropyl-4-bis- (3, 5-trifluo-rom eti I) phenyl-inden-1-yl) zirconium; dimethylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3, 5) -trif luoromethyl) feniIinden-1-yl); bis-di methylamide of diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoromethyl) phen-linden-1-yl) zirconium; 2-Methyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoro-rom I) phenyl-inden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenylinden-1-yl); allyl zirconium diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis- (3,5-trifluoro methyl I) phenylinden-1-yl); ? Diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phenyl! Inden-1-yl) zirconium; -1,4-diphenyl-1,3-butadiene; ? 4-2,4-hexadiene of diphenylamidoboran-bis-? 5- (2-iso? Ropil-4-bis- (3,5-trifluoromethyl) phenylinden-1-yl) zirconium; 4-1-dinaphthyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phen-linden- 1 -i l) zirconium; 4-1-phenyl-1,3-pentadiene of diphenylamidoboran-bis-? 5- (2-isopropyl-4-bis (3,5-trifluoromethyl) phen-linden-1-yl) zirconium; 4-1,3-penta diene di difen Mam idoboran-bi s-? 5- (2-isopropyl-4-bis- (3, 5-trifluo rom ethyl) phenylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium dichloride; dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) dimethyl zirconium; diphenylamidoboran-bis-? 5- (3-iso-ropilinden-1-yl) zirconium bisdimethylamide; Diphenylamidoboran-bis-? 5- (3-isopropylinden-1 -ii) zirconium 2-methyl-1,3-butadiene; Diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium 2,3-dimethyl-1,3-butadiene; 2-N zirconium, diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) N-dimethyl-aminobenzyl; alicylic zirconium diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl); Diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; 4-1,4-diphenyl-1,3-butadiene; 4-4,4-hexadiene diphenylamidoboran-bis-? 5- (3-isopropylinden-1 -yl) zirconium; ? Diphenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium-1,4-dinaphthyl-1,3-butadiene; ? 1-phenyl-1,3-pentadiene of diphenylamidoboran-bis-? S- (3-isopropylinden-1-yl) zirconium; d? 4-1, 3-pentadiene of ifenylamidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium dichloride; Diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) dimethyl zirconium; diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium bisdimethylamide; Diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium 2-methyl-1,3-butadiene; 2, 3-dimethyl-1,3-butadiene of diphenylamidoboran-bis-? 5- (3-t-butyl inden-1 -yl) zirconium; diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) 2-N, N-dimethylaminobenzyl zirconium; diphenylamidoboran-bis- [5- (3-t-butylinden-1-yl) allylic zirconium; ? Diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium -1,4-diphenyl-1,3-butadiene; ? 4-2,4- hexadiene of diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; Diphenylamidoboran-bis-? 5- (3-t-butyl ind en-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene; ? 1-phenyl-1,3-pentadiene of diphenylamidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; gave? -1, 3- pentadiene of phenylamidoboran-bis-? 5- (3-t-buty linden- 1 -i l) zirconium; bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium dichloride; dimethylic zirconium of bis (trimethylsilyl) amidoboran-bís-? 5-cyclopentadienyl; bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; 2,3-dimethyl-3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; zirconium2-N, N-dimethylaminobenzyl of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienyl; allyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienyl; 4-1,4-Diphenyl-1,3-butadiene bis (tritymethylsilyl) amidoboran-bis-5-cyclopentadienylzirconium; bi? -2,4-hexadiene of s (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; b? 4-1-phenyl-1,3-pentadiene of is (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; 5-1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylzirconium; bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylzirconium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl dimethyl zirconium; bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylzirconium bis-dimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yizirconium; 2,3-dimethyl-l, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylzirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl; allylic zirconium of (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl; 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- inden-1-ylzirconium; ? -2,4- hexadiene of bis (trimethylsilyl) amidoboran-bis-? S-inden-1-ylzirconium; ? -1,4-dinaphthyl-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylzirconium; ? -1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylzirconium; 4-1,3-pentadiene of bis (trimethysilyl) amidoboran-bis-? 5-inden-1-ylzirconium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium dichloride; dimethylic zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl); bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium bisdimethylamide; 2-Methyl-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl inden-1-yl); allyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl); 4-1,4-Difyl nyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; ? 4-2,4-hexadiene of bis (trimethylsily!) Amidoboran-bis-? (2-methylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; b? 4-1-phenyl-1,3-pentadiene of is (trimethylsilyl) amidoboran-bis-? 5- (2-methyI ind en-1-yl) zirconium; b? 4-1, 3-pentadiene of is (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) zirconium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium dichloride; dimethylic zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (trimethylsilyl) amidoboran-bis- (5- (2-methyl-4-phenylinden-1-yl) allylic zircon; 4- (1,4-diphenyl) -1,3-butadiene of bis (trimethylsilyl) amidoboran-bis- (5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-2, 4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-4,4-di naphthi 1-1, 3-b utad i of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; 4-1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyI-4-pheni I inden-1-yl) zirconium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthiinden-1-yl) zirconium dichloride; dimethylic zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthiinden-1-yl); bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium bisdimethylamide; 2-me? Tl il-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthiinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene m? or of bis (trimethylsilyl) amidoboran-bis-? (2-methyl-4-naphthylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl); allyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; ? -2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-m eti I -4- naphthyl I inden-1 -yl) zirconium; [-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis- [5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium dichloride; dimethylic zirconium of bis (trimethylsilyl) amidoboran-bis- [5- (3-isopropylinden-1-yl); bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1 -yl) zirconium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? S- (3-isopropylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? s- (3-isopropylinden-1-yl); allyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1 -yl) zirconium; 4-2, 4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1 -yl) zirconium; 4- (1,4-dinaphthyl-1,3-butadiene of is (trimethylsilyl) amidoboran-bis-? 5- (3-isopropyIinden-1-yl) zirconium; 4- (4-phenyl) -1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis- [5- (3-isopropylinden-1-yl) zirconium; ? -1-3 pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) zirconium; bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium dichloride; zirconium dimethyl of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yio); bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium bisdimethylamide; 2-Methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2, 3-d i meti 1-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-bu ti linden-1-yl); allyl zirconium of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; 4-1,4-dinapht-1, 3-buta-diene of bis (trimethylsilyl) amidoboran-b-s-? 5- (3-t-butylinden-1-ii) zirconium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; ? -1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) zirconium; bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium dichloride; dimethylic zirconium of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium bisdimethylamide; 2-methyl-1, 3-butadiene of bis (diisopro-pillamido) diboran-1,2-bis-? 5- (2-methyI-4-phen i linden-1-yl) zirconium; 2, 3-d i meti 1-1, 3-butadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (diisopropylamido) -diboran-1,2-b- s-? 5- (2-methyl-4-phen-linden-1-yl); allyl zirconium of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyI-4-phenylinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; ? -2,4-hexadiene of bis (düsopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of bis (diisopropylamido) diboran-1, 2- bis-? 5- (2-methyl-4-phen-linden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phen i I inden-1-yl) zirconium; 4-1,3-pentadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phen-linden-1-yl) zirconium; dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium dichloride; dimethylamidoboran-bis-? 5-cyclopentadienyl dimethyl hafnium; bisdimethylamide of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 2,3-dimethyl-1,3-butadiene hafnium of dimethylamidoboran-bis-? 5-cyclopentadienyl; 2-N, N-dimethylaminobenzyl hafnium of dimethylamidoboran-bis-? 5-cyclopentadienyl; allyl hafnium of dimethylamidoboran-bis-? 5-cyclopentadiene; 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 4-2,4-hexadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 4-1,4-dinaphthyl-1,3butadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; 5-1,3-pentadiene of dimethylamidoboran-bis-? 5-cyclopentadienyl hafnium; dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium dichloride; Dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl dimethylic hafnium; bisdimethylamide of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; hafnium 2-N, N-dimethylaminobenzyl of dimethylamidoboran-bis-? 5- n-butyl cyclopentadienyl; allyl hafnium of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl; ? -1,4- diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; 4-2, 4-hexadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; ? -1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; ? -1- phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; 5-1,3-pentadiene of dimethylamidoboran-bis-? 5-n-butylcyclopentadienyl hafnium; dimethylamidoboran-bis-? 5-inden-1-yl hafnium dichloride; dimethylamidoboran-bis-? 5-inden-1-yl dimethyl hafnium; bisdimethylamide of dimethyiamidoboran-bis-? 5-inden-1-ylhafnium; 2-methyl-1,3-buta-diene of dimethylamidoboran-bis-? 5-inden-1-ylhafnium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5-inden-1-yi hafnium; 2-N, N-dimethylaminobenzyl hafnium of dimethylamidoboran-bis-? 5-inden-1-yl; allyl hafnium of dimethylamidoboran-bis-? 5-inden-1-yl; 4-1,4-diphenyl-1, 3-butadiene of dimethylamidoboran-bis-? 5-inden-1-ylhafnium; ? -2,4-hexadiene of dimethylamidoboran-bis-? 5 -inden-1-ylhafnium; ? -1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5-inden-1-ylhafnium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5-inden-1-ii hafnium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5-inden-1-yl hafnium; dimethylamidoboran-bis-? 5- (2-m eti linden-1-yl) hafnium dichloride; dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) dimethyl hafnium; bisdimethylamide of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 2-methi I-1,3-butadiene of d imeti lamidoboran-bis-? 5- (2-methyIinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 2-N, N-dimethiaminobenzyl of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; allyl hafnium of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyIinden-1-yl) hafnium; 4-2, 4-hexadiene of di-methylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; ? -1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyI ind en-1-yl) hafnium; ? -1,3- pentadiene of dimethylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) dimethyl ammonium hafnium; bisdimethylamide of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phen i-linden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; hafnium 2-N, N-dimethylaminobenzyl dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); allyl hafnium of dimethylamidoboran-bis-? - (2-methyl-4-phenylinden-1-yIo); ? -, 4-diphenyl-1, 3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) hafnium; ? 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-pheny! Inden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-pheni I inden-1-yl) hafnium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) hafnium; dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium dichloride; dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) dimethyl ammonium hafnium; bisdimethylamide of dimethylamidoboran-bis-? 5- (2-methyI-4-naphthi I inden-1-yl) hafnium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthi I ind en-1-yl) hafnium; 2,3-dimethyI-1,3-butadiene of dimethylamidoboran-bis-? S- (2-methyl-4-naphthylinden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); allyl hafnium of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 4-2, 4-hexadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? D- (2- m eti I-4-naphthyl inden-1-yl) haf nio; ? -1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthindenyl-yl) hafnium; 4-1, 3-pentadiene of dimethylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium dichloride; dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) dimethyl hafnium; dimethylamidoboran-bis-? 5- (3-iopropylinden-1-yl) hafnium bis-dimethyiamide; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3- i or prop-i-linden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl); allyl hafnium of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropyl inden-1-yl) hafnium; ? 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; ? -1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 4-1,3-pentadiene of dimethylamidoboran-bis-? 5- (3- i-propy I inden-1-yl) hafnium; dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium dichloride; dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) dimethyl ammonium hafnium; bis-d i methylamide of di-methylamidoboran-bis-? 5- (3-t-butyl inden-1-yl) hafnium; 2-methyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene gives dimethylamidoboran-bis-? 5- (3-t-b uti I ind en-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl); allyl hafnium of dimethylamidoboran-bis-? s- (3-t-butylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butyl inden-1-yl) haf nio; 4-2,4-hexadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of dimethylamidoboran-bis-? 5- (3-t-butyl inden-1-yl) hafnium; ? -1-phenyl-1,3-pentadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 4-1,3-pentadiene of dimethylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; diisopropylamidoboran-bis-? 5-cyclopentadienylhafnium dichloride; di-isopropylamidoboran-bis-5-cyclopentadienyl dimethyl hafnium; bisdimethylamide of diisopropylamidoboran-bis-? 5-cyclopentadienyl hafnium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-cyclo-pentadienyl hafnium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5-cyclo-pentadienylhafnium; 2-N, N-dimethylaminobenzyl hafnium of diisopropylamidoboran-bis-5-cyclopentadienyl; allyl hafnium of diisopropylamidoboran-bis-? 5-cyclopentadienyl; 4-1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-cyclopentadienylhafnium; 4-2.4- hexadiene of diisopropylamidoboran-bis-? 5-cyclopentadienyl hafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5-cyclopentadienylhafnium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5-cyclopentadienylhafnium; 5-1, 3- pentadiene diisopropylamidoboran-bis-? 5-cyclopentadienyl hafnium; diisopropylamidoboran-bis-? 5-inden-1-ylhafnium dichloride; di-isopropylamidoboran-bis-? 5-inden-1-yl dimethyl hafnium; Bisdimethylamide of diisopropylamidoboran-bis-? 5-inden-1-ylhafnium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-inden-1-yl hafnium; 2,3-dimethyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-inden-1-yl hafnium; 2-N-dimethylaminobenzyl hafnium of diisopropylamidoboran-bis-? 5-inden-1-yl; allyl hafnium of diisopropylamidoboran-bis-? 5-inden-1-yl; 4-1,4-Diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5-inden-1-ylhafnium; ? -2,4-hexadiene of diisopropylamidoboran-bis-? 5-inden-1-ylhafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5-inden-1-ylhafnium; ? -1-phenyl-1, 3- pentadiene of diisopropylamidoboran-bis-? S-inden-1-yl hafnium; 5-1,3-pentadiene diisopropylamidoboran-bis-? 5-inden-1-ylhafnium; diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium dichloride; diisopropyl! amidoboran-bis-? 5- (2-methylinden-1-yl) dimethyl hafnium; bisdimethylamide of diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 2-methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene diisopropyamidoboran-bis-? 5- (2-methylinden-1-ii) hafnium; hafnium 2-N, N-dimethylaminobenzyl diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl); allyl hafnium of diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; ? 4-2,4- hexadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-m eti I inden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; ? -1,3- pentadiene diisopropylamidoboran-bis-? 5- (2-m eti I ind en-1-yl) hafnium; diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium dichloride; hafnium dimethyl diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); bisdimethylamide of düsopropylamidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) hafnium; 2- methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phen i linden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of diisopropylamidoboran-bis- ?; (2-methyl I -4-phenylinden-1-yl); allyl hafnium of diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-faith nyl ind en-1-yl) hafnium; 4-4-hexadiene of diisopropylamidoboran-bis-? 5- (2-methyl-4-pheny! Inden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenyladenden-1-yl) hafnium; ? -1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) haf nio; ? -1, 3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) hafnium dichloride; di-isopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) dimethyl hafnium; bisdimethylamide of diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) hafnium; 2-methyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthi I inden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl); allyl hafnium of diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthiinden-1-yl); ? -1,4-diphenyl-1,3-butadiene from düsopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) hafnium; ? 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 4-1, 3-pentadiene diisopropylamidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; dichloride of d i i so propi lam idoboran-bis-? 5- (3-isopropi I inden- 1 -il) hafnium; di-isopropylamidoboran-bis-? 5- (3-isopropylinden-1-iio) dimethyl hafnium; Bisdimethylamide of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1 -yl) hafnium; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-isopropyl I inden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (3-isopropyl inden-1 -yl) haf nio; 2-N, N-dimethylaminobenzyl hafnium of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl); diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 4-4,4-Diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-i so pro-pilinden-1-yl) hafnium; ? 4-2,4-hexadiene diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; ? -1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (3-iso-pro-pilinden-1-yl) hafnium; 4-1, 3-pentadiene diisopropylamidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium dichloride; di-isopropylamidoboran-bis-? s- (3-t-butylinden-1-yl) dimethyl hafnium; d-isopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium bisdimethylamide; 2-methyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-t-b util inden-1 -yl) hafnium; 2,3-dimethyl-1,3-butadiene of diisopropylamidoboran-bis-? 5- (3-t-butyl I inden-1-yl) hafnium; hafnium 2-N, N-dimethylaminobenzyl diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl); allyl hafnium of diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of diisopropylamidoboran-bis-? S- (3-t-butylinden-1-yl) hafnium; 4-2, 4- hexadiene of diisopropy! Amidoboran-bis-? S- (3-t-butylinden-1 -iI) hafnium; 4-1,4-dinaphthyl-1,3-butadiene diisopropylamidoboran-bis-? 5- (3-t-butyl inden-1 -yl) hafnium; 4-1-phenyl-1,3-pentadiene diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 4-1, 3- pentadiene diisopropylamidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienyl hafnium dichloride; bis (trimethylsilyl) amidoboran-bís-? 5-cyclopentadienyl dimethyl hafnium; bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylhafnium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylhafnium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylhafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienyl; aulic hafnium of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienyl; 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadienylhafnium; ? 4-2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclo-pentadienylhaf nio; 4-Dynaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclopentadiene, hafnium; 4-1- phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? S-cyclopentadienylhafnium; 5-1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5-cyclo-pentadienylhafnium; bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl dimethyl hafnium; Bisdimethylamide of (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl hafnium; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsi! Il) amidoboran-bis-? 5-inden-1-ylhafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl; allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl; 4-1,4-diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium; 4-2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-ylhafnium; ? -1,3- pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5-inden-1-yl hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyIinden-1-yl) hafnium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) dimethyl hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) hafnium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; hafnium 2-N. N-dimethylaminobenzyl of bis (trimethyl-silyl) -amidoboran-bis-? 5- (2-methylinden-1-yl); allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl); ? -1, 4-difonyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyIinden-1-yl) hafnium; 4- (2,4-hexadiene) of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylind en-1-yl) hafnium; 4- (1,4-dinaphthyl-1,3-butadiene) of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl I inden-1-yl) hafnium; 5-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; 4-1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methylinden-1-yl) hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium dichloride; dimethylic hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-pheni I inden-1-yl) hafnium bisdimethylamide; 2-Methyl-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? S- (2-methyl-4-phenylimid-1-yl) hafnium; 2,3-dimethyl-l, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phen-linden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) -amidoboran-bis-? 5- (2-methyl-4-phen-linden-1-yl); allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl); 4-1,4-Diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis- (5- (2-methyl-4-phenyl) inden-1-yl) hafnium; 4-2, 4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 4-1,4-d-naphthi 1-1, 3-buta-diene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phen-linden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 4-4, 3- pentadiene of bis (tri-methylsilyl) amidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) dimethyl hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl) 4-nafti linden-1-yl) hafnium; 2,3-d-methyl-l, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-m eti I-4-naphthi I ind en-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl); allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyI-4-naphtho linden-1-yio); 4-1,4-diphenyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-m eti I-4-naphthyl inden-1-yl) hafnium; ? -2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthinden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-m eti I-4-naphthyl inden-1-yl) hafnium; 4-4, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) dimethyl hafnium; bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium bisdimethylamide; 2-methyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3? - sopropilinden-1-yl) hafnium; 2, 3-d-imethyl-1, 3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) -amidoboran-bis-? 5- (3-isopropylinden-1-yl); allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl); 4-1,4-Difyl nyl-1, 3-butadiene of bis (trimethylsily!) Amidoboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; 4- (2,4-hexadiene) of bis (trimethylsilyl) amidoboran-bis- [5- (3-isopropylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-isopropylinden-1-yl) haf nio; ? -1- phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3- i-propyl I -inden-1-yl) hafnium; 4-1, 3-pentadiene of bis (trimethylsilyl) am? Doboran-bis-? 5- (3-isopropylinden-1-yl) hafnium; bis (tri-methylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium dichloride; bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) dimethyl ester; bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium bisdimethylamide; of 2-methyl-1,3-butadiene bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-b uti I inden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl); allyl hafnium of bis (trimethylsilyl) amidoboran-bis-? - (3-t-butylinden-1-yl); ? -1,4-dif in il-1, 3-butadie not of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-buty-linden-1-yl) hafnium; ? -2,4-hexadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; 4-1,4-dinaphthyl-1,3-butadiene of bis (trimethylsilyl) amidoboran-bis-? 5 (3-t-butiIinden-1-yl) hafnium; 4-1-phenyl-1,3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; ? -1, 3-pentadiene of bis (trimethylsilyl) amidoboran-bis-? 5- (3-t-butylinden-1-yl) hafnium; bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium dichloride; dimethylic hafnium of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenyl! inden-1-yl); Bisdimethylamide of bis (diisopropylamido) diboran-1, 2-bis-? 5- (2-m eti l-4-phen i linden-1-yl) hafnium; 2-methyl-1,3-butadiene of bis (diisopropylamido) diboran-1,2-bis-? S- (2-methyl-4-phenylinden-1-yl) hafnium; 2,3-dimethyl-1,3-butadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; 2-N, N-dimethylaminobenzyl hafnium of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yIo); allyl hafnium of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; ? -2,4-hexadhehoxy of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) hafnium; ? 1,4-dinaphthyl-1,3-butadiene of bis (diisopropylamido) diborane-1,2-bis-? 5- (2-methyl-4-phen-linden-1-yl) hafnium; 4-1-Phenylenedi-1,3-pentadiene of bis (diisopropylamido) diboran-1,2-bis-? S- (2-methyl-4-phenylinden-1-yl) hafnium; 4-1, 3-pentadiene of bis (diisopropylamido) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; (? 5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium dichloride; Dimethyl (? 5-tetramethyl! cyclopentadienyl) (tert-butylamido) diisopropylamidoborane titanium; bis-dimethylamide of (? 5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; 2-methyl-1,3-butadiene of (ε-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; 2,3-dimethyl-1,3-butadiene (5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; titanium 2-N, N-dimethylaminobenzyl of (? 5-tetramethylcyclopentadienil) (tert-butylamido) diisopropylamidoborane; allyl titanium (5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoborane; ? -1,4-diphenyl-l, 3-butadiene of (? 5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; ? 4-2, 4- hexadiene of (? 5-tetramethylc? Clopentadiene) (tert-b uti lido) diisopropylamidoboran titanium; 4-1,4-d-naphthi 1-1, 3-butadiene of (? 5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; ? -1,5-phenyl-1,3-pentadiene of (5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; 4-1, 3-pentadiene of (5-tetramethylcyclopentadienyl) (tert-butylamido) diisopropylamidoboran titanium; (? 5-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoboran titanium dichloride; Dimethyl (? 5-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoborane titanium; bis (D-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropyamidoboran titanium bisdimethylamide; 2-Methyl-1, 3-butadiene of (? 5-tetramethylcyclopentadienyl) (cid ohexy lamido) diisopropylamidoboran titanium; 2,3-dimethyl-l, 3-butadiene of (? 5-tetramethylcyclopentadienyl) (cyclohexylated) diisopropylamidoboran titanium; 2-N, N-dimethylaminobenzyl titanium from (? 5-tetramethylcyclopentadienii) (cyclohexylamido) diisopropylamidoborane; allyl titanium (5-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoborane; ? -1,4-diphenyl-1,3-butadiene of (5 5 -tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoboran titanium; ? -2,4-hexadiene of (? 5-tetramethylcyclopentadienyl) (cyclohexylamido) di? Sopropylamidoboran titanium; 4-1, 4-d i naf ti 1-1, 3-butadiene of (? 5-tetramethylcyclopentadienyl) (cid or hexy lamido) diisopropylamidoboran titanium; ? 4-1-phenyl-1,3-pentadiene of (? 5-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoboran titanium; ? 5-1, 3-pentadiene of (? 5-tetramethylcyclopentadienyl) (cyclohexylamido) diisopropylamidoboran titanium;. (? 5-tetramethylcyclopentadienyl) (tert-butylamido) bis- (diisopropylamide) diborium titanium dichloride; dimethyl (? 5-tetramethylcyclopentadienyl) (tert-butylamido) -bis (diisopropylamide) diborane titanium; bisdimethylamide of (? -5-tetramethyl ICI clopenta dienthyl) (tert-butylamido) -bis (diisopropylamide) diborium titanium; 2-Methyl-1, 3-butadiene of (? 5-tetramethylcyclopentadiphenyl) - (tert-butylamido) bis (diisopropylamide) diborium titanium; 2,3-dimethyl-l, 3-butadiene of (? 5-tetramethylcyclopentadienyl) - (tert-butylamido) bis (diisopropylamide) diborium titanium; 2-N, N-dimethylaminobenzyl titanium from (? 5-tetramethylcyclo-pentadenyl) (tert-butylamido) bis (diisopropylamide) diborane; allyl titanium of (? 5-tetramethylcyclopentadienyl) (tert-butylamido) -bis (d-iso propyl-lamide) diborane; ? -1,4-diphenyl-1,3-butadiene of (ε-tetramethyl I cyclope ntadien i I) - (tert-butylamido) bis (diisopropylamide) diborane titanium; ? -2,4-hexadiene of (? 5-tetramethylcyclopentadienyl) (tert-butylamido) -bis (diisopropylamide) dibora titanium; 4-1,4-Dynaphthyl-1, 3-butadiene of (5-tetramethylcyclopentadienyl) - (tert-butylamido) bis (diisopropylamide) diborane titanium; ? 4-1-phenyl-1,3-pentadiene of (? 5-tetramethylcyanopentadienyl) - (tert-butylamido) bis (diisopropylamide) dibora titanium; 4-1, 3-pentadiene of (5-tetramethylcyclopentadienyl) (tert-butylamido) -bis (diisopropylamide) dibora titanium; (? 5-tetramethylcyclopentadienyl) (phenylamido) -diisopropylamidoboran titanium dichloride; Dimethyl (? 5-tetramethylcyclopentadienyl) (phenylamido) -diisopropylamidoborane titanium; bis-dimethylamide of (? 5-tetramethylcyclopentadienii) - (phenylamido) diisopropylamidoboran titanium; 2-methyI-1, 3-butadiene of (? 5-tetramethylcyclopentadienyl) - (phenylamido) diisopro? Ylamidoboran titanium; 2,3-dimethyl-l, 3-butadiene of (? 5-tetramethylcyclopentadienyl) - (phenylamido) diisopropylamidoboran titanium; 2-N, N-dimethylaminobenzyl titanium from (? 5-tetramethylcyclo-pentadienyl) (phenylamido) diisopropylamidoborane; allyl titanium of (? 5-tetramethylcyclopentadienyl) - (phenylamido) diisopropylamidoborane; 4-1,4-diphenyl-1,3-butadiene of (ε-tetramethyl-c-phenylenedienyl) - (phenylamido) diisopropylamidoboran titanium; ? -2,4-hexadiene of (? 5-tetramethylcyclopentadienyl) (phenylamido) -diisopropylamidoboran titanium; 4-1,4-dinaphthyl-1,3-butadiene of (? S-tetramethylcyclopentadienyl) - (phenylamido) diisopropylamidoboran titanium; ? 4-1-phenyl-1,3-pentadiene of (? 5-tetramethylcyclopentadienyl) - (phenylamido) diisopropylamidoboran titanium; ? -1, 3-pentadiene of (? 5-tetramethylcyclopentadienyl) (phenylamido) -diisopropylamidoboran titanium; (β-tetramethylcyclopentadienyl) (tert-butylamido) -dimethylamidoboran titanium dichloride; Dimethyl (? 5-tetramethylcyclopentadienyl) (tert-butylamido) dimethylamidoborane titanium; bis (D-tetramethylcyclopentadienyl) (tert-butylamido) -dimethylamidoboran titanium bisdimethylamide; 2-methyl-1,3-butadiene of (? 5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethi lamidoboran titanium; 2,3-dimethyl-1,3-butadiene of (γ 5 -tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; titanium 2-N, N-dimethylaminobenzyl of (? 5-tetramethylcyclopentadienil) (tert-butylamido) dimethylamidoborane; allyl titanium from (? 5-tetramethylcyclopentadienyl) (tert-butylamido) -d imeti lam borante; 4-1,4-Diphenyl-l, 3-butadiene of (5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; ? 4-2,4-hexadiene of (? 5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; ? -1, 4-dinaphthyl-1,3-butadiene from (? 5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; 4- (4-phenyl) -1,3-pentadiene of (5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; 4-1, 3-pentadiene of (5-tetramethylcyclopentadienyl) - (tert-butylamido) dimethylamidoboran titanium; (? s-inden-1 -yl) (tert-butylamido) diisopropylamidoboran titanium dichloride; Dimethyl (? 5-inden-1-yl) (tert-butylamido) -diisopropylamidoborane titanium; Bisdimethylamide of (? s-inden-1 -yl) (tert-butiiamido) -diisopropylamidoboran titanium; 2- methyl-1,3-butadiene of (? 5-inden-1 -yl) (tert-butylamido) -diisoprop? Lamidoboran titanium; 2,3-dimethyl-1,3-butadiene from (? 5-inden-1 -yl) (tert-butylamido) -diisopropylamidoboran titanium; 2- N, N-dimethylaminobenzyl titanium of (? 5-inden-1-yl) (tert-butylamido) diisopropylamidoborane; allyl titanium of (? 5-inden-1-yl) (tert-butylamido) -diisopropylamidoborane; ? -1,4-diphenyl-1,3-butadiene of (? 5-inden-1-yl) (tert-butylamido) diisopropylamidoboran titanium; 4- (2,4-hexadiene) of (? 5-inden-1-yl) (tert-butiiamido) -diisopropylamidoboran titanium; 4- (1,4-dinaphthyl-1,3-butadiene of (? 5-inden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium; ? 4-1-phenyl-1,3-pentadiene of (? 5-inden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium; 4-1, 3-pentadiene of (? 5-inden-1-yl) (tert-butylamido) -diisopropyamidoboran titanium; (? 5-2,3-dimethyl-1 -) (tert-butylamido) diisopropylamidoboran titanium dichloride; dimethyl (? 5-2,3-dimethylinden-1-yl) (tert-butylamido) -diisopropylamido borane titanium; bisdimethylamide of (? 5-2,3-dimethylinden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium; 2-methyl-1,3-buta-diene of (? 5-2, 3-d imeti I inden-1-yl) (tert-butyl amido) -diisopropylamidoboran titanium; 2,3-dimethyl-1,3-butadiene of (? 5-2,3-dimethylinden-1-yl) - (tert-butylamido) diisopropylamidoboran titanium; 2-N, N-dimethylaminobenzyl titanium from (? 5-2,3-dimethylinden-1 -yl) -8: (tert-butyl-lime) di-or borane propylamido; allyl titanium from (? 5-2,3-dimetitinden-1-yl) (tert-butylamido) -diisopropylamidoborane; ? 5-1,4-Diphenyl-1,3-butadiene of (? 5-2,3-dimethylinden-1-yl) - (tert-butylamido) diisopropylamidoboran titanium; ? 4-2,4-hexadiene of (? 5-2,3-dimethylinden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium; ? -1,4-dinaphthyl-1,3-butadiene of (? 5-2,3-dimethylinden-1-yl) - (tert- bu ti la mido) diisopropylamidoboron titanium; 4-1-phenyl-1,3-pentadiene of (? 5-2,3-dimethylinden-1-yl) - (tert-butyl lamido) diisopropylamide boran titanium; 4-1, 3-pentadiene or (? 5-2,3-di methyl inden-1-yl) (tert-butyl amide) -disopropylamidoboran titanium; (ε-2-pyrrolidene! inden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium dichloride; Dimethyl (? 5-2-pyrrolidenylinden-1-yl) - (tert-butylamido) diisopropylmethyl titanium; bisdimethylamide of (? 5-2-pyrrolidenylinden-1-yl) (tert-butylamido) -diisopropylamidoboran titanium; 2-methyl-1,3-butadiene of (? 5-2-pyrrolidenylinden-1-ii) - (tert-butylamido) diisopropylamidoboran titanium; 2,3-Dimethyl-1,3-butadiene of (? 5-2-pyrrolidenylinden-1-yl) - (tert-butylamido) diisopropylamidoboran titanium; 2-N, N-dimethylaminobenzyl titanium from (? 5-2-pyrrolidenylinden-1-ii) - (tert-butylamido) diisopropylamidoborane; allyl titanium of (? 5-2-pyrrolidenylinden-1 -yl) - (tert-butylamido) diisopropylamidoborane; 4-1,4-Diphenyl-1,3-butadiene of (5-pyrrolidinediinden-1-yl) - (tert-b used) diisopropylamidoboran titanium; ? -2,4-hexadiene of (? 5-2-pyrrolidenylinden-1 -yl) (tert-butylamido) -diisopropylamidoboran titanium; ? -1,4-di-naphtyl-1,3-butadiene of (ns-2-pyrrolidenylinden-1 -yl) - (tert-butylamido) diisopropylamidoboran titanium; ? -1- phenyl-1,3-pentadiene of (? -2-pyrrolidenylinden-1 -yl) - (tert-butylamido) diisopropylamidoboran titanium; ? -1, 3-pentadiene of (? 5-2-pyrrolidenylinden-1 -yl) (tert-butylamido) -diisopropylamidoboran titanium; bis-phenylamido-bis (diisopropylamido) diborium titanium dichloride; bis-phenylamido-bis (diisopropylamido) diborane dimethyl titanium; bis-phenylamido-bis (diisopropylamido) dibodilamine bisdimethylamide; 2-me ti I-1, 3- butadiene of bis-phenylamido-bis (diisopropylamido) dibora titanium; 2,3-dimethyl-1,3-butadiene of bis-phenylamido-bis (diisopropylamido) -diboran titanium; 2-N titanium, N-dimethylaminobenzyl of bis-phenylamido-bis- (diisopropylamido) borane; allyl titanium of bis-phenylamido-bis (diisopropylamido) diborane; ? -1, 4-diphenyl-1,3-butadiene of bis-phenylamido-bis- (diisopropylamido) dibora titanium; 4-2,4-hexadiene of bis-phenylamido-bs (diisopropylamido) dibora titanium; ? -1,4-dinaphthyl-1,3-butadiene of bis-phenylamido-bis (diisopropylamido) dibora titanium; 4-4-phenyl-1,3-pentadiene of bis-phenylamido-bis (diisopropylamido) dibora titanium; 4-1, 3- pentadiene of bis-phenylamido-bis (diisopropylamido) dibora titanium; bis-2,6-diisopropylphenylamido-bis (diisopropylamido) diborium titanium dichloride; dimethyl titanium of bis-2, 6-diisopropylphenylamido-bis- (diisopropylamido) diborane; bis-2, 6-diisopropylphenylamido-bis- (d-isopropylamido) bisdimethylamide diborium titanium; 2-metii-1, 3-butadiene of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) dibora titanium; 2,3-dimethyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) dibora titanium; 2-N, N-dimethylaminobenzyl titanium of bis-2,6-diisopropylphenylamido-bis (diisopropylamido) borane; allyl titanium of bis-2,6-diisopropylphenylamido-bis (diisopropylamido) diborane; ? 4- 1, 4-di-Fe-nyl-1,3-buta-diene of bis-2,6-d-isopropyl-phenylamido-b- (diisopropylamido) dibora titanium; 4-2, 4-hexadiene of bis-2, 6-diiso-ropilfen-ylamido-bis- (d propylated use) diboran titanium; of α 4-1, 4-d i naph ti 1-1, 3-butadiene bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) dibora titanium; ? -1-phenyl-1,3-pentadiene of bis-2,6-diisopropy-phenylamido-bis- (diisopropylamido) dibora titanium; ? -1, 3-pentadiene of bis-2, 6-diisopropylphenylamido-bis- (diisopropylamido) dibora titanium; dichloride of bis-3, 5-di meti I benci lam ido-bis (di meti la mido) di boran titanium; dimethyl titanium of bis-3, 5-dimethyl-benzylamido-bis- (dimethylamido) borane; bisdim eti lamida of bis-3, 5-dime ti lbenci lamido-bis (dime ti lam ido) -diboran titanium; 2-methyl-1,3-butadiene of bis-3, 5-dimethylbenzylamido-bis- (dimethylamido) dibora titanium; 2,3-dimethyl-1,3-butadiene of bis-3,5-dimethylbenzylamido-bis- (dimethylamido) diborane titanium; 2-N, N-dimethylaminobenzyl titanium of bis-3, 5-dimethylbenzylamido-bis (dimethylamido) diborane; bis-3 allyl titanium, 5-dimethylbenzylamido-bis (dimethylamido) diborane; 4-4, 4-d ifen i 1-1, 3-b uta die no of bis-3, 5-di meti I be ncilamido-bis- (dimetiiamido) diboran titanium; 4-2, 4-hexadiene of bis-3, 5-dimethylbenzylamido-bis- (dimethylamido) dibora titanium; 4-1,4-dinaphthyl-1,3-butadiene of bis-3,5-dimethylbenzylamido-bis- (dimethylamido) diborane titanium; 4-1-phenyl-1,3-pentadiene of bis-3,5-dimethylbenzylamido-bis- (dimethylamido) dibora titanium; ? -1, 3-pentadiene of bis-3, 5-dimethylbenzylamido-bis- (dimethylamido) dibora titanium; dichloride of bis-2,6-dimethylbenzylamido-bis (dimethylamido) dibora titanium; dimethylic titanium of bis-2, 6-dimethylbenzylamido-bis (dimethylamido) -diborane; bis-2, 6-dimethylbenzylamido-bis (dimethylamido) -diboran titanium bisdimethylamide; 2-methyl-1,3-butadiene of bis-2,6-dimethylbenzylamido-bis- (dimethylamido) diborane titanium; 2,3-dimethyl-1,3-butadiene of bis-2,6-dimethylbenzylamido-bis- (dimethylamido) diborane titanium; 2-N, N-dimethylaminobenzyl titanium of bis-2,6-dimethylbenzylamido-bis (dimethylamido) diborane; bis-2 allyl titanium, 6-dimethylbenzylamido-bis (dimethylamido) diborane; 4-4,4-Diphenyl-1,3-butadiene of bis-2,6-dimethylbenzyl amido-bis- (dimethylamido) diborane titanium; ? -2, 4-hexadiene of bis-2,6-dimethylbenzylamido-bis (dimethylamido) -diboran titanium; 4-1,4-dinaphthyl-1,3-butadiene of bis-2,6-dimethylbenzylamido-bis- (dimethylamido) diborane titanium; 4-1-phenyl-1,3-pentadiene of bis-2,6-dimethylbenzylamido-bis- (dimethylamido) dibora titanium; 4-1, 3-pentadiene of bis-2, 6-dimethylbenzylamido-bis (dimethylamido) -diboran titanium; bis-2,6-diisopropylphenylamido-bis (dimethylamido) diborium titanium dichloride; dimethyl titanium of bis-2, 6-diisopropylphenylamido-bis- (dimethylamido) diborane; bis-dimethylamide of bis-2,6-diisopropylphenylamido-bis (dimethylamido) -diboran titanium; 2-methyl-1,3-butadiene of bis-2,6-diisopropy-phenylamido-bis- (dimethylamido) diborane titanium; 2,3-dimethyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (dimethylamido) diborane titanium; 2-N, N-dimethylaminobenzyl titanium of bis-2,6-diisopropylphenylamido-bis (dimethylamido) dibo rano; bis-2 allyl titanium, 6-diisopropylphenylamido-bis (dimethylamido) diborane; 4-1,4-Diphenyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (dimethylamido) diborane titanium; 4-2, 4-hexadiene of bis-2,6-diisopropyl-n-amide bis (d-imeti-lamido) -diboran titanium; 5-1,4-dinaphthyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (d? Methylamido) diborane titanium; 4-1-phenyl-1,3-pentadiene of bis-2,6-dusopropylphenylamido-bis- (dimethylamido) dibora titanium; 4-1, 3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (dimethylamido) dibora titanium; bis-2, 6-diisopropylphenylamido-bis (bis (trimethylsilyl) -amido) diborium titanium dichloride; dimethyl titanium of bis-2, 6-diisopropylphenylamido-bis (bis- (trimethylsilyl) amido) diborane; bis-2, 6-diisopropylf-enylamido-bis (bis (trimethylsilyl) -amido) dibodi titanium bisdimethylamide; 2-methyl-1, 3-butadiene of bi-2, 6-d-isopropyl iso in the midobis (b i s- (trimethylsilyl) amido) dibora titanium; 2, 3-d i meti 1-1, 3-butadiene of bis-2,6-diisopropylphenylamido-bis (bis- (trimethylsilyl) amido) diborane titanium; 2-N, N-dimethylaminobenzyl titanium of bis-2,6-diisopropylphenylamido bis (bis (trimethylsilyl) amido) diborane; bis-2 allyl titanium, 6-diisopropylphenylamido-bis (bis (trimethylsilyl) amido) diborane; 4-1, 4-dif in il-1, 3-butadiene of bis-2,6-diisopropylphenylamido-bis (bis- (trimethylsilyl) amido) diborane titanium; 4-2,4-hexadiene of bis-2,6-diisopropylphenylamido-bis (bis- (trimethylsilyl) amido) di boran titanium; ? -1,4-dinaphthyl-1,3-butadiene of bi-2, 6-di isopropyl fe niiamido-bis (bis (trimethylsilyl) amido) diborane titanium; 4-4-phenyl-1,3-pentadiene of bis-2,6-diisopropylphenylamido-bis (bis- (trimethylsilyl) amido) dibora titanium; 4-1, 3-pentadiene of bis-2,6-diisopropylphenylamido-bis (bis- (tri-methylsilyl) amido) dibora titanium; dichloride of bi-2, 6-d iisopropi Ifen i mido-bis (disopropy lam id) -diboran zirconium; dimethyl zirconium of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) diborane; bis-2, 6-diisopropylphenylamido-bis- (diisopropylamido) diborazide zirconium bisdimethylamide; 2-methyl-1,3-butadiene of bis-2,6-diisopropyl-phenylamido-bis- (diisopropylamido) diborazinium zirconium; 2, 3-d i meti I-1, 3-b utad in o of bis-2,6-diisopropylphenyl amide bis (düsopropylamide) diborazole zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis-2,6-diisopropylphenyl-a mido-bis (diisopropylamido) borane; allyl zirconium of bis-2, 6-diisopropylphenylamido-bis- (diisopropylamido) diborane; 4-1,4-diphenyl-1,3-butadiene of bis-2,6-disopropy If in ilam ido-bis- (diisopropylamido) diborazir zirconium; 4-2,4-hexadiene of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) diborazole zirconium; 4-1, 4-d i naf ti 1-1, 3-b uta di en o of bis-2, 6-d i i so prop ilf eni lam ido-bis- (diisopropilamido) diboran zirconio; 4-1-phenyl-1,3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) dibran zirconium; 4-1, 3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (diisopropylamido) diborazole zirconium; bis-2-tert-butylphenylamido-bis (diisopropylamido) diborium titanium dichloride; bis-2-tert-butylphenylamido-bis (diisopropylamido) diborane dimethyl titanium; bis-2-tert-butylphenylamido-bis (diisopropylamido) diborane titanium bisdimethylamide; 2-methyl-1,3-butadiene of bis-2-tert-butylphenylamido-bis- (diisopropylamido) dibora titanium; 2,3-dimethyl-l, 3-butadiene of bis-2-tert-butylphenylamido-bis- (diisopropylamido) dibora titanium; 2- N, N-dimethylaminobenzyl titanium of bis-2-tert-butylphenylamido-bis (diisopropylamido) diborane; bis-2-tert-butylphenylamido-bis (diisopropylamido) diborane allyl titanium; ? -1,4-diphenyl-1,3-butadiene of bis-2-tert-butylphenylamido-bis- (diisopropylamido) di boran titanium; 4-2, 4-hexadiene of bis-2-tert-butylphen i lamido-bis (diisopropy lamido) diboran titanium; 4-1,4-dinaphthyl-1,3-butadiene of bis-2-tert-butylphenylamido-bis- (diisopropylamido) dibora titanium; ? -1-phenyl-1,3-pentadiene of bis-2-tert-butylphenylamido-bis- (diisopropylamido) dibora titanium; and? 4-1,3-pentadiene of bis-2-tert-butylphenylamido-bis (diisopropyamido) dibora titanium. An additional class of transition metal complexes of Group 4 of the present invention is represented in the formulas previously defined 4-9, where T is: including structures wherein two groups R1 and R5 are linked such as in 1,3,4,6,7,8, hexahydro-pyrimido [1,2-a] pyrimidinate, shown below: In the previous species, it is believed that, without wishing it to be bound by theory, the ligand group, T, is connected to Z via its heterogeneous atoms. Specific, non-limiting examples of the above metal complexes included within the invention are: N, N'-diisopropyl-phenyl-amidinate duran-bis-? 5-cyclopentadienylzirconium dichloride; dimethylic zirconium of N. N'-diisopropyl-phenyl-amidinate borane-5-cyclopentadienyl; Bisdimethylamide of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5-cyclopentadienylzirconium; 2-methyl-1,3-butadiene of N. N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienylzirconium; 2,3-dimethyl-1,3-butadiene of N, N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienylzirconium; N, N-dimethylaminobenzyl zirconium of N, N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienyl; N, N'-diisopropyl-phenyl-amidinate boran-bis-5-cyclopentadienyl alicylic zirconium; ? -1,4-dif-in-1, 3-butadiene of N, N'-diisopropyl-phenyl-amidinate boran-bts-? 5-cyclopentadienylzirconium; 4- 4, 4-hexadiene of N. N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienylzirconium; 4-1, 4-d i naf ti I-1, 3- butadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5-cyclopentadienylzirconium; 4-1-phenyl-1,3-pentadiene of N.N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienylzirconium; 4-1, 3-pentadiene of N, N'-diisopropyl-phenyl-amidinate borane-bis-? 5-cyclopentadienylzirconium; N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5-cyclopentadienylzirconium dichloride; dimethylic zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine borane-bis-? 5-cyclopentadienyl; bisdimethylamide of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? d-cyclopentadienylzirconium; 2-Methylene-1,3-butadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine borane-bis-? 5- cyclopentadienylzirconium; 2, 3-d and methyl-1, 3-b utadino of N, N'-diisopropyl-3-phenyl-1,3-diketi-boran-bis-5-cyclopentadienylzirconium; 2-N, N-dimethylaminobenzyl zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5-cyclopentadienyl; allylic zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine borane-bis-? 5-cyclopentadienyl; ? -1,4-diphenyl-1,3-butadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine borane-bis-? 5- cyclopentadienylzirconium; 4-2,4-hexadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- cyclopentadienylzirconium; ? -1,4-dinaphthyl-1,3-butadiene from N.N'-diisopropyl-S-phenyl-1,3-diketimine boran-bis-? -cyclopentadienylzirconium; ? -1-phenyl-1, 3- pentadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine borane-bis-? 5- cyclopentadienylzirconium; 4-1, 3-pentadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- cyclopentadienylzirconium; N, N'-diisopropy-dimethylguanidinate dichranide boran-bis-? 5-cyclopentadienylzirconium; dimethylic zirconium of N, N'-diisopropyl-dimethylguanidinednate boran-bis-? 5-cyclopentadienyl; Bisdimethylamide of N, N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; 2-methyl-1,3-butadiene of N, N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; 2,3-dimethyl-1,3-butadiene from N.N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; 2-N-N-dimethylaminobenzyl zirconium of N. N'-diisopropyl-dimethyl-guanidinate boran-bis-? -cyclopentadienyl; allylic zirconium N, N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienyl; 4-1, 4-difeni 1-1, 3-butadiene of N. N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; 4-2,4-hexadiene of N, N'-diisopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; ? -1, 4-d i naph ti 1-1, 3-butadiene of N. N'-diisopropyl-dimethiiguanidinate boran-bis-? 5-cyclopentadienylzirconium; 4-1-phenyl-1,3-pentadiene of N. N'-düsopropyl-dimethylguanidinate boran-bis-? 5-cyclopentadienylzirconium; 5-1, 3-pentadiene of N, N'-diisopropyl-dimethylguanidinate boran-bis-? -cyclopentadienylzirconium; 1, 3,4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate dichloride bo ra n -b i s-? 5-in den-1-zirconium; 1,3, 4,6,7,8-hexahydro-pyrimido [1,2-a] -pyrimidinate boran-bis-? 5-inden-1-yl dimethyl zirconium; 1,3,4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate boran-bis-? 5-inden-1-ylzirconium bisdimethylamide; 2-methyl-1,3-butadiene of 1, 3, 4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate boran-bis-? 5-nden-1-ylzirconium; 2,3-dimethyI-1,3-butadiene of 1.S ^ .ß ^ .S-hexahydro-pyrimidotl ^ -ajpyrimidinate boran-bis-? 5-inden-1-ylzirconium; 2-N, N-dimethylaminobenzyl zirconium of 1,3,4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate boran-bis-? 5-inden-1-yl; 1, 3,4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate boran-.bis-? 5-inden-1-yl allylic zirconia; 4-1, 4-d ifen il-1, 3-buta diene of 1,3,4,6,7,8-hexahydro-pyrimido [1,2-a] pyrimidinate boran-bis-? 5-inden- 1-ylzirconium; 4-2,4-hexadiene of 1, 3,4,6,7,8-hexahydro-pyrimido [1,2-aj-pyrimidinate boran-bis-? 5-inden-1-zirconium; 4-1, 4-di naphthi 1-1, 3-butadiene of 1, 3,4,6,7,8-hexahydro-pyrimido- [1,2-a] pyrimidinate boran-bis-? 5-inden -1-ylzirconium; 4-1-phenyl-1,3-pentadiene of 1, 3,4,6,7,8-hexahydro-pyrimido [1,2-a] -pyrimidinate boran-bis-? 5-inden-1-ylzirconium; 4-1,3-pentadiene of 1, 3,4,6,7,8-hexahydro-pyrimido [1,2-a] -pyrim-dinate boran-b? S-? 5-inden-1-ylzirconium; N, N'-diisopropyl-phenyl-amidinate dichranide boran-bis-? 5- (2-methylinden-1-yl) zirconium; dimethylic zirconium of N.N'-diisopropyl-phenyl-amidinate boran-bis-? d- (2-methylinden-1-yl); borane-bis-? 5- (2-methylinden-1-yl) zirconium N, N'-diisopropyl-phenyl-amidinate bisdimethylamide; 2-Methyl-1,3-butadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyI ind en-1-yl) zirconium; 2,3-Dimethyl-1,3-butadiene of N, N'-diisopropyl-phenylimidine boran-bis-? 5- (2-methylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl I inden-1-yl); allyl zirconium of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methylinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methylinden-1-yl) zirconium; 4-2,4-hexadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methylinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methylinden-1-yl) zirconium; ? -1-phenyl-1,3-pentadiene of N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl inden-1-yl) zirconium; 4-1, 3-pentadiene of N. N'-düsopropyl-phenyl-amidinate boran-bis-? 5- (2-methylinden-1-yl) zirconium; N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate dichloride boran-bis-? í (2-methyl-4-phenylinden-1-yl) zirconium; dimethylic zirconium of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenylinden-1-yl); bisdimethylamide of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-methyl-1,3-butadiene of N.N'-bis-2,6-diisopropylphenyl-phenyl-amidinate borane-bis-? 5- (2-methyl-4-phenyleinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene of N, N'-bis-2,6-diisopropylphenyl-phene-am i-dinate boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-N-N-dimethylaminobenzyl zirconium of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenylinden-1-yl); allylic zirconium of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate borane-bis-? 5- (2-methyl-4-phenylinden-1-yl); ? -1, 4-dif-en-1-1, 3-butadiene of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; 1,4-2,4-hexadiene of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; ? -1,4-dinaphthi-1, 3-butadiene of N.N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phen i I inden- 1-il) zirconium; 4-1-phenyl-1,3-pentadiene of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate borane-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; 4-1, 3-pentadiene of N, N'-bis-2,6-diisopropylphenyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; N, N'-bis-2,6-diisopropylphenyl-3-methyl-1,3-diketimine dichloride boran-bis-? 5- (2-methyl-4-phenyl-n-1-l) zirconium; dimethylic zirconium of N, N'-bis-2,6-diisopropylphenyl-3-methyl-, 3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl); Bisdimethylamide of N, N, -bis-2,6-disopropyl-1,3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 2-Methyl-1,3-butadiene of N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1 - il) zirconium; 2,3-dimethyl-1,3-butadiene from N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden- 1 -yl) zirconium; 2-N-N-dimethylaminobenzyl zirconium of N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl); N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) alicylic zirconia; 4-1,4-diphenyl-1, 3-butadiene of N, N'-bis-2,6-diisopropylphenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4) phenyl-inden-1-yl) zirconium; 4-2,4-hexadiene of N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) ) zirconium; 4-1,4-dinaphthyl-1, 3- butadiene of N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4) phenyl-inden-1-yl) zirconium; 4-1-phenyl-1, 3- pentadiene of N, N'-bis-2,6-diisopropyl-phenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-f) in linden- 1 -il) zirconium; 4-1, 3-pentadiene of N, N'-bis-2,6-diisopropylphenyl-3-methyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-phenylinden-1-yl) ) zirconium; di bis (N-N'-d-isopropyl-n-amidinate) diboran-1,2-bis-? 5- (2-methyl-1-4-phenyl-inden-1-yl) zirconium chloride; dimethylic zirconium of bis (N-N'-diisopropyl-phenyl-amidinate) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (N-N'-diisopropyl-phene-amidinate) dibberan-1,2-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium bisdimethylamide; 2-Methyl-1,3-butadiene of bis (N-N'-diisopropyl-phenyl-amidinate) -diboran-1,2-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zi reo nio; 2,3-dimethyl-1,3-butadiene of bis (N, N'-diisopropyl-phenyl-amidinate) diboran-1,2-bis-? 5- (2-methyI-4-phenyl-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (N, N'-diisopropyl-phenylaminidinate) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); allyl zirconium of bis (N-N'-diisopropyl-phenyI-amidinate) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); 4-1,4-Difyl nyl-1,3-butadiene of bis (N-N'-disopropyl-1-phen-1-amidenate) -diboran-1, 2-bis-? 5- (2- methyl-4-phenylinden-1-yl) zirconium; 4-2, 4-hexadiene of bis (N, N'-diisopropyl-phenylaminidinate) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium; 4-1, 4-di naphthi I-1,3-butadiene of bis (N, N'-diisopropyl-phenyl-amidinate) -diboran-1,2-bis-? 5- (2-methyl-4-) phenyl-inden-1-yl) zirconium; ? -1- Phenyl-1,3-pentadiene of bis (N, N'-diisopropyl-phenyl-amidinate) -diboran-1,2-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; 4-, 3- pentadiene of bis (N, N'-diisopropyl-phenyl-amidinate) d -boran-1,2-bis-? 5- (2-methyl-4-phenyl-inden-1-yl) zirconium; bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diboro-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium dichloride; dimethyl zirconium of bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) -diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) -diboran-1,2-bis-? 5- (2-methyl-4-phenylnide-1-yl) zirconium bisdimethylamide; 2-Methylene-1,3-butadiene of bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) -diboran-1,2-bis-? 5- (2-methyl-4-phenylinden- 1-il) zirconium; 2,3-dimethyl-1,3-butadiene of bis (N, N'-diisopropyl-3-phenyI-1,3-diketimine) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden -1-il) zirconium; 2-N, N-dimethylaminobenzyl zirconium of bis (N, N'-diisopropyl-3-phenyl-1,3-d-di-methyl) di-boran-1,2-bis-? 5- (2-methyl-4-phen Linden- 1 -ilo); allylic zirconium of bis (N, N'-düsopropyl-3-phenyl-1,3-diketimine) diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1-yl); 4-1 4-diphenyl-1,3-butadiene of bis (N-N'-diisopropyl-3-phenyl-1,3-d iceti mi na) di boran- 1, 2-bis-? 5- (2- methyl-4-f in I-linden-1-yl) zirconium; 4-2, 4-hexadiene of bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) -diboran-1,2-bis-? 5- (2-methyl-4-phenylinden-1) -il) zirconium; 4-1,4-dinaphthyl-1, 3- butadiene of bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diboran-1,2-bis-? 5- (2- methyl- 4-phenylinden-1-yl) zirconium; 5-1-phenyl-1,3-pentadiene of bis (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diboran-1,2-bis-? 5- (2-methyl-4-) phenyl-inden-1-yl) zirconium; 4-1, 3-pentadiene of bis (N, N'-diisopropyl-3-phenyl-1,3-d iceti m ina) -diboran-1,2-bis-? 5- (2- metiI-4-) phenyl-inden-1-yl) zirconium; N.N'-diisopropy-phenyl-amidinate dichloride boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; dimethylic zirconium of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthinden-1-yl); bis-dimethylamide of N.N'-düsopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-methyl-1,3-butadiene from N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene from N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthinden-1-yl); allyl zirconium of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthinden-1-yl); ? -1,4-diphenyl-1,3-butadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; ? -2,4-hexadiene of N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthylinden-1-yl) zirconium; 4-1,4-di-naphthi-1,3-butadiene of N.N'-diisopropyl-phenyl-amidinate boran-bis-? 5- (2-methyl-4-naphthi I inden- 1 -ii) ) zirconium; ? -1-phenyl-1,3-pentadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? S- (2-methyl-4-naphthylidene-1-ii) zirconium; 4-, 3-pentadiene of N, N'-diisopropyl-phenyl-amidinate boran-bis-? S- (2-methyl-4-naphthylinden-1-yl) zirconium; N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium dichloride; dimethylic zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl); bisdimethylamide of N.N'-düsopropyl-S-phenyl-l, 3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-methy1-1,3-butadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2,3-dimethyl-1,3-butadiene from N.N'-diisopropyl-S-phenyl-I.S-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 2-N, N-dimethylaminobenzyl zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthalin-1-yl); allylic zirconium of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyI-4-naphthiinden-1-yl); 4-1,4-diphenyl-1,3-butadiene of N, N'-diisopropyl-3-phenyl-1,3-d-iceti min to boran-bis-? 5- (2-methyl-4-naphthylden-1-) il) zirconium; 4-2,4-hexadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1,4-dinaphthyl-1,3-butadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthiinden-1-yl) zirconium; 4-1-phenyl-1,3-pentadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; 4-1, 3-pentadiene of N, N'-diisopropyl-3-phenyl-1,3-diketimine boran-bis-? 5- (2-methyl-4-naphthinden-1-yl) zirconium; dichloride of bis-2,6-diisopropylphenylamide o-bis (N, N'-diisopropyl-n-nylamidinate) diborium titanium; dimethyl titanium of bis-2, 6-diisopropylphenylamido-bis (N, N'-diisopropyl-phenyl-amidinate) diboran; bis-2,6-diisopropylphenylamido-bis (N, N-diisopropyl-phenyl-amidinate) bisdimethylamide dibora titanium; 2-methyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (N'-diisopropyl-phenyl-amidinate) diborane titanium; 2,3-dimethyl-1,3-butadiene of bis-2,6-diisopropyl-enylamido-bis- (N, N'-diisopropyl-phenyl-amidinate) diborane titanium; 2-N-N-dimethylaminobenzyl titanium of bis-2,6-diisopropylphenylamido-bis (N, N'-diisopropyl-phenyl-amidinate) diborane; bis-2 allyl titanium, 6-diisopropy-phenylamido-bis- (N, N'-diisopropyl-phenyl-amidinate) diborane; 4-1-Diphenyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-phenyl-amidinate) diborane titanium; 4-2,4-hexadiene of bis-2,6-diisopropylphenylamido-bis- (N.N'-diisopropyl-phenyl-amidinate) diborazole titanium; 4-1, 4-d i naf ti I-1, 3- butadiene of bis-2, 6-d i isoprop ilf in ilamido-bis- (N, N'-diisopropyl-phenyl-amidinate) dibora titanium; 4-1-phenylene-1,3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-phenyl-amidinate) dibora titanium; 4-1,3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-phenyl-amidinate) dibora titanium; di bis-2,6-diisopropyl-n-bis-bis (N, N'-diisopropy-3-phenyl-1, 3-diimimine) diborium titanium chloride; bis-2, 6-diisopropylphenylamido-bis- (N, N'-diisopropyl-S-phenyl-I. S-diketimine) diborane dimethyl titanium; bis-dimethylamide of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) dibora titanium; 2-methyl-1,3-butadiene of bis-2,6-dusopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) dibora titanium; 2,3-dimethyl-1,3-butadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diborium titanium; 2-N-dimethylaminobenzyl titanium of bis-2,6-diisopropylphenylamido-bis (N, N'-diisopropyI-3-phenyl-1,3-diketimine) diborane; bis-2 allyl titanium, 6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diboran; 4-1,4-Difyl nyl-1,3-buta-ieno of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) dibora titanium; 4-2,4-hexadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) dibora titanium; ? -1,4-dinaphthyl-1,3-butadiene of bis-2,6-diisopropylf in ilamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diborium titanium; ? -1-phenyl-1,3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyI-3-phenyl-1,3-diketimine) dibora titanium; and? 4-1, 3-pentadiene of bis-2,6-diisopropylphenylamido-bis- (N, N'-diisopropyl-3-phenyl-1,3-diketimine) diborium titanium. Those skilled in the art will recognize that additional members of the above list are also included, such as those in which boron is replaced by aluminum within the invention. In addition, it should also be recognized that the terms "5" or "4" may not accurately reflect the actual electronic distribution of the molecule under conditions of use, and that molecules that include smaller numbers of atoms contributing to electronic delocalization are intended to be included within such descriptions, too. Highly preferred metal complexes are: dimethylamidoboran-bis (? 5-cyclopentadienyl) zirconium dichloride, dichloride dimethylamidoboran-bis (? 5-inden-1 -i!) Zirconium, dichloride dimethylamidoboran-bis (? 5-2- methyl-4-phenylimid-1-yl) zirconium, dichloride dimethylamidoboran-bis (? 5-2-ethyl-4-phen-linden-1-yl) zirconium, dimethylamidoboran-bis (? 5-2-isopropyl) dichloride 4-phen-linden-1-yl) zirconium, dimethylamidoboran-bis (? 5-2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium dichloride, dimethylamidoboran-bis dichloride (? 5-3-t-butylinden-1-yl) zirconium, diisopropylamidoboran-bis- (? 5-cyclopentadienyl) zirconium dichloride, dichloride diisopropylamidoboran-bis (? 5-inden-1-yl) zirconium, diisopropylamidoboran dichloride -bis (? 5-2-methyl-4-phenylimid-1-yl) zirconium, diisopropylamidoboran-bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium dichloride, diisopropylamidoboran-bis dichloride (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium, diisopropylamidoboran-bis dichloride (5- 2-m eti i -4-bis (3, 5-trif luoromethyl) f enyl inden-1 -yl) zirconium, diisopropylamidoboran-bis (? 5-3-t-butylinden-1-yl) zirconium dichloride, dichloride diphenylamidoboran-bis (? 5-cyclopentadienyl) zirconium, diphenylamidoboran-bis (? 5-inden-1-yl) zirconium dichloride, diphenylamidoboran-bis (? 5-2-methyl-4-phenylinden-1-yl) zirconium dichloride , diphenylamidoboran-bis (? 5-2-ethyl-4-phenylimid-1-yl) zirconium dichloride, dichloride d ifen i lamido boran-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium , diphenylamidoboran-bis (? 5-2-methyl-4-bis (3,5-trifluoromethyl) phenylinden-1-yl) zirconium dichloride, diphenylamidoboran-bis (? 5-3-t-butylinden-1-dichloride) il) zirconium, 1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis (? 5-cyclopentadienyl) zirconium, 1,4-dif in 1-l, 3-butadiene of dimethylamidoboran-bis (? 5-inden- 1 -yl) zirconium, 1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis (? 5-2-metii-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of dimethylamido idoboran-bis (? 5-2-ethyl-4-f in Linden- 1 -yl) zirconium, 1,4-diflu enyl-1, 3-butadiene of dimethylamidoboran-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of dimethylamidoboran-bis (? 52-methyl-4-bis (3,5-trifluoromethyl) f enlylinden-1 -yl) zirconium, 1,4-diphenyl-1, 3-Butadiene of dimethylamidoboran-bis- (? 5-3-t-butylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis (? 5-cyclopentadienyl) zirconium, 1,4-dif enyl-1, 3-butadiene diisopropylamidoboran-bis (? 5-inden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene diisopropylamidoboran-bis (? 5-2-methyl-4-phenylinden- 1 -yl) zirconium, 1,4-diphenyl-1,3-butadiene, diisopropylamidoboran-bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium, 1,4-diflude-1, 3- buta diene diisopropylamidoboran-bis (? 5-2-isopropyl-4-phenylimid-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene diisopropylamidoboran-bis (il-5-2-methyl-4-) bis (3,5-trifluoromethyl) -phenyl-inden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene, diisopropylamidoboran-bis (? 5-3-t-butylinden-1-yl) zirconium, 1 Diphenylamidoboran-bis (? 5-cyclopentadienyl) zirconium, 4, 4-diphenyl-1, 3-butadiene ifenyl-1, 3-butadiene diphenylamidoboran-bis (? s-inden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene diphenylamidoboran-bis (? 5-2-methyl-4-phenylinden-1 - il) zirconium, 1, 4-d ifen i 1-1, 3-butadiene diphenylamidoboran-bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1, 3- butadiene of diphenylamidoboran-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of dif en i lam idoboran-bis (? 5-2-methyl- 4-bis (3,5-trifluoromethyl) f enyl ind en-1-yl) zirconium, and 1,4-diphenyl-1,3-butadiene diphenylamidoboran-bis - (? 5-3- t-butyl inden- 1 -il) zirconium. In general, the complexes of the present invention can be prepared by first converting the ligands represented by the formulas 1a and 2a to a dianion salt (wherein R4 is H) through the reaction with a metal amide such as bis (trimethylsilyl) sodium amide or lithium bis (trimethylsilyl) amide). Then, the dianionic ligand derivative is reacted with a precursor of the metal complex such as MY34, MY33, or MY32 (and the corresponding Lewis base adducts), wherein Y3 is as defined above. Alternatively, reactions employing the neutral ligand, wherein R 4 is hydrogen, may be employed in combination with metal precursors M (N R 32) 4 or MR 34. (The preparation of the ligands of the formula 2a wherein Y1 and Y2 are each a group NR1 can be easily obtained by contacting a diboro-tetrahydrocarbyl oxide compound of the formula ((R7O) 2B) 2, wherein R7 it is hydrocarbyl of 1 to 10 carbon atoms or 2 R7 groups together are dihydrocarbyl of 2 to 20 carbon atoms, especially bis (catecholate) diboro with a dihydrocarbylamide of 1 to 4 carbon atoms of alkali metal, especially lithium dimethylamide). All the above reactions are conducted in an inert solvent such as a hydrocarbon solvent or an ethereal solvent on the temperature scale of -100 ° C to 1 50 ° C. An especially useful metal complex precursor reagent corresponds to formula 3: Formula 3 where M is zirconium, R1 and LB are as previously defined and R3 in each occurrence is chloride. The use of this precursor in the ligand reaction of this invention causes the resulting metal complex to have a high racemic purity, which is especially useful in the stereospecific polymerization of α-olefins. Alternatively, when R4 in the structures of formulas 1a and 2a is a trimethylsilyl group, the ligand can be reacted directly with any of the above metal complex precursors of formula 3, employing similar reaction conditions. The recovery of the desired Group 4 transition metal complex is achieved through the separation of the product from any alkaline or alkaline earth metal salt or devolatilization of the reaction medium. If desired, extraction can be employed in a secondary solvent. Alternatively, if the desired product is an insoluble precipitate, filtration techniques or other separation techniques may be employed. The final purification, if required, can be achieved through the recrystallization of an inert solvent, using low temperatures if necessary. The complexes are made catalytically active through the combination with activating cocatalysts or the use of activation techniques that are previously known in the art for use with Group 4 metal olefin polymerization complexes. Activation cocatalysts suitable for use herein include polymeric or oligomeric alumoxanes especially alumoxane, methylalumoxane modified with triisobutyl aluminum or isobutylalumoxane; neutral Lewis acids, such as Group 13 compounds substituted with hydrocarbyl of 1 to 30 carbon atoms, especially tri (hydrocarbyl) aluminum or tri (hydrocarbyl) boron compounds and their halogenated derivatives (including perhalogenates) having from 1 to 10 carbon atoms carbon in each hydrocarbyl or halogenated hydrocarbyl group, more especially perfluorinated tri (aryl) boron compounds and most especially tris (pentafluorophenyl) borane; non-polymeric, compatible, non-coordinating ion-forming compounds (including the use of said compounds under oxidation conditions), especially the use of ammonium, phosphonium, carbonium, silylium or sulfonium salts of anions without compatible coordination, or ferrocenium salts of anions without coordination, compatible, bulk electrolysis (explained in more detail below); and combinations of cocatalysts and activation techniques above. The above activating cocatalysts and activation techniques have previously been taught with respect to different metals in the following references: EP-A-277,003, US-A-5, 157, US-A-5,064,802, US-A-5,321, 106, US-A-5, 721, 185, US-A-5,350,723, US-A-5,425, 872, US-A-5,625,087, US-A-5,883,204, US-A-5, 919, 983, US- A-5,783, 512, WO 99/15534, and USSN 09/251, 664, filed February 17, 1999. Combinations of neutral Lewis acids, especially the combination of a trialkylaluminum compound having 1 to 4 carbon atoms in each alkyl group and a tri (hydrocarbyl) borohalogenated compound having from 1 to 20 carbon atoms in each hydrocarbyl group, especially tris (pentafluorophenyl) borane, other combinations of said mixtures of neutral Lewis acid with a polymeric and oligomeric alumoxane, and combinations of a single neutral Lewis acid, especially tris (pentafluorophenyl) borane with a polymeric or oligomeric alumoxane they are especially desirable activation catalysts. Preferred molar ratios of Group 4 metal complex: tris (pentafluorophenyl) borane: alumoxane are from 1: 1: 1 to 1: 10:30, most preferably from 1: 1: 1.5 to 1: 5: 10. Suitable ion forming compounds useful as cocatalysts in one embodiment of the present invention comprise a cation, which is a Bronsted acid capable of donating a proton, and an uncoordinated, compatible anion, A. "As used herein, the term" uncoordinated "means an anion or substance that neither coordinates the precursor complex containing the Group 4 metal and the catalytic derivative derived from the group. same, or that is only weakly coordinated to said complexes thus remaining sufficiently labile to be displaced by a neutral Lewis base.An anion without coordination specifically refers to an anion that when functioning as a charge-balancing anion in a complex of The cationic metal does not transfer an anionic substituent or fragment thereof to said cation, thus forming neutral complexes The "compatible anions" are anions that are not degraded to neutrality when the initially formed complex decomposes and are free of interference with the desired subsequent polymerization. Other uses of the complex Preferred anions are those that contain a coordination complex individual comprising a metal carrying a metalloid charge or core, said anion is capable of balancing the charge of the active catalyst species (the metal cation), which can be formed when the two components are combined.

Also said anion must be sufficiently labile to be displaced by olefinic, diolefinic and acetylenically unsaturated compounds, or other neutral Lewis bases such as ethers or nitriles. Suitable metals include, but are not limited to, aluminum, gold and platinum. Suitable metalloids include, but are not limited to, boron, phosphorus and silicon. Compounds containing anions comprising coordination complexes containing an individual metal or a metalloid atom are, of course, well known and many, particularly such compounds containing an individual boron atom in the anion portion, are commercially available. Preferably, said cocatalysts can be represented by the following general formula: (L + -H) d * (A) d- wherein: L * is a neutral Lewis base; (L * -H) + is a conjugated Bronsted acid of L *; Ad "is a compatible anion, without coordination having a charge of d-, and d is an integer from 1 to 3. Most preferably, Ad" corresponds to the formula: [M'Q4]; wherein M 'is boron or aluminum in the formal oxidation state +3; Q independently of each occurrence is selected from hydride, dialkylamido, halide, hydrocarbyl, hydrocarbyl oxide, halo substituted hydrocarbyl, halo substituted hydrocarbyloxy, and halo substituted hydrocarbyl radicals (including perhalogenated hydrocarbyl radicals, perhalogenated hydrocarbyloxy radicals and perhalogenated silylhydrocarbyl), group Q having up to 20 carbon atoms as long as no more than one occurrence is Q = halide. Examples of suitable hydrocarbyl oxide groups Q are described in the patent of US Pat. No. 5,296,433. In a highly preferred embodiment, d is one, that is, the counter ion has an individual negative charge and is A "Activation cocatalysts comprising boron, which are particularly useful in the preparation of catalysts of this invention, can be represented by the following general formula: (L * -H) + (BQ4) ', where: L * is as previously defined, B is boron in a formal oxidation state of 3, and Q is a hydrocarbyl, hydrobiioxy group , fluorohydrocarbyl, fluorohydrocarbyloxy, hydroxyfluorohydrocarbyl, dihydrocarbylaluminoxy-fluorohydrocarbyl, or fluorinated silylhydrocarbyl of up to 20 non-hydrogen atoms, provided that on no more than one occasion Q is hydrocarbyl.The preferred Lewis base salts are ammonium salts, preferably dialkylammonium salts containing one or more alkyl groups of 12 to 40 carbon atoms, most preferably, Q is in each occurrence a fluorinated aryl group, especially a p-group. entafluorophenyl. Illustrative, but not limiting, examples of boron compounds that can be used as activating cocatalysts in the preparation of the improved catalysts of this invention are: Tri-substituted ammonium salts such as: trimethalammonium tetrakis (pentafluorophenyl) botate, Botato tetrakis (pentafluorophenyl) of triethylammonium, Botato tetrakis (pentafluorophenyl) of tripropylammonium, Botato tetrakis (pentafluorophenyl) of tri (n-butyl) ammonium, Botato tetrakis (pentafluorophenyl) of tri (sec-butyl) ammonium, Botato tetrakis (pentafluorophenyl) of N N-dimethylanilinium, Borate n-butyltris (N-N-dimethylanilinium pentafluorophenyl, Borate benzyltris (pentafluorophenyl) N-dimethylanilinium, Borate tetrakis (4- (t-butyldimethylsilyl) -2,3,5,6-tetrafluorophenyl) N, N-dimethylanilinium, Borate tetrakis (4- (triisopropylsilyl) -2,3,5,6-tetrafluorophenyl) of N, N-dimethylanilinium, Borate pentafluorofenoxitris (pentafluorophenyl) of N, N-dimethylanilinium , Borate tetrakis (pentafluorophenyl) of N, N-diethylanilinium, Borate tetrakis (pentafluorophenyl) of N, N-dimethyl-2,4,6-trimethylanilinium, Borate tetra quis (pentaf Iorophenic ion) dimethyltetradecylammonium, Borate tetrakis (pentafluorophenyl) ) of dimethylhexadecylammonium, Borate tetrakis (pentafluorophenyl) of dimethyloctadecylammonium, Borate tetrakis (? Entafluorophenyl) of methylditetradecylammonium, Borate (hydroxyphenyl) tris (pentafluorophenyl) of methylditetradecylammonium, Borate (diethylaluminoxyphenyl) tris (pentafluorophenyl) of methylditetradecylammonium, Borate tetrakis (pentafluorophenyl) of methyldihexadecylammonium, Borate (hydroxyphenyl) tris (pentafluorophenyl) methyldihexadecylammonium, Borate (diethylaluminoxyphenyl) tris (pentafluorophenyl) methyldihexandecylammonium, Borate tetrakis (pentafluorophenyl) methyldioctadecylammonium, Borate (hydroxyphenyl) tris (pentafluorophenyl) of methyldioctadecylammonium, Borate (diethylaluminoxyphenyl) tris (pentafluorophenyl) of methyldioctadecylammonium, Mixtures of the above, Dialkylammonium salts such as: Borate tetrakis (pentafluorophenyl) of di- (i-propyl) ammonium, Borate tetrakis (pentafluorophenyl) of methyloctadecylammonium, tetrakis (pentafluorophenyl) borate of methyloxydecylammonium, and Borate tetrakis (pentafluorophenyl) dioctadecylammonium; Trisubstituted phosphonium salts such as: triphenylphosphonium tetrakis (pentafluorophenyl) borate, tetrakis (pentafluorophenyl) methyldioctadecylphosphonium borate and tetrakis (pentafluorophenyl) borate of tri (2,6-dimethylphenyl) phosphonium; Di-substituted oxonium salts such as: diphenyloxonium tetrakis (pentafluorophenyl) borate, tetra (pentafluorophenyl) borate of di (o-tolyl) oxonium; and Borate tetrakis (pentafluorophenyl) di (octadecyl) oxonium; Sulfonium di-substituted salts such as: Borate tetrakis (pentafluorophenyl) di (o-tolyl) sulfonium and Borate tetrakis (pentafluorophenyl) methyloctadecylsulfonium. The preferred (L * -H *) cations are methyldioctadecylammonium and dimethyloctadecylammonium. Another suitable ion forming, activating cocatalyst comprises a salt of a cationic oxidizing agent and a compatible anion, without coordination represented by the formula: (Oxß +) d (Ad-) ß- where: Ox + is an agent of cationic oxidation that has a charge of e +; E is an integer from 1 to 3; and Ad "and d are as previously defined Examples of cationic oxidation agents include: ferrocenium, ferrocenium substituted with hydrocarbyl, Ag + - or Pb + 2. Preferred embodiments of Ad" are those previously defined anions with respect to Bronsted acid containing cocatalyst of activation, especially borate tetraqis (pentafl uorophenic).

Another suitable suitable ion-forming activating cocatalyst comprises a compound which is a salt of a carbenium ion and a non-coordinating compatible anion represented by the formula: <RTI ID = 0.0> + A </ RTI> wherein: <+> is a carbenium ion of 1 to 20 atoms carbon, and A "is as previously defined. A preferred carbenium ion is the trityl cation, ie triphenylmethylium. An additional suitable ion-forming activating cocatalyst comprises a compound, which is a salt of a silylium ion and a compatible anion without coordination represented by the formula: R3Si (X ') q + A- wherein: R is hydrocarbyl 1 to 10 carbon atoms, and X ',, q and A "are as previously defined The preferred silylium salt activating cocatalysts are tetrakis (pentafluorophenyl) trimethylsilyl phenyl borate, triethylsilyl tetrakis (pentafluorophenyl) borate and their substituted adducts with ether Silylium salts have previously been generically described in J. Chem. Soc. Chem. Comm, 1993, 383-384, as well as in Lambert, JB et al., Organometallics, 1994, 13, 2430-2443. of the above silylium salts as activating cocatalysts for addition polymerization catalysts is disclosed in U.S. Patent Application Serial No. 304,314 filed September 12, 1994, published in the form quivalent as WO96 / 08519 on March 21, 1996. Certain complexes of mercaptan, silanols and oximes alcohols with tris (pentafluorophenyl) borane are also effective catalyst activators and can be used in accordance with the present invention. Such cocatalysts are described in USP 5,296,433. Another suitable class of cocatalysts are expanded anionic compounds corresponding to the formula: (A1 + a1) b1 (Z1J1j1rc1d1, wherein: A1 is a charge cation + a1, Z1 is an anion group of 1 to 50, of 1 to 30 atoms, not counting hydrogen atoms, which also contains two or more Lewis base sites; J 1 independently of each occurrence is a Lewis acid coordinated with at least one Lewis base site of Z 1, and optionally two or more of these groups J 1 may be linked together in a portion having multiple Lewis acid functionality, j 1 is a number from 2 to 12 and a1, b1, c1, and d1 are integers from 1 to 3, provided that a1 x b1 is equal to c1 x d1. The above cocatalysts (illustrated by those having anions of imidazolide, substituted imidazolide, imidazolinide, substituted imidazolinide, benzimidazolide, or substituted benzimidazolide) can be represented schematically as follows: wherein: A1 + is a monovalent cation as defined above, and is preferably a trihydrocarbylammonium cation, containing one or two alkyl groups of from 1 to 40 carbon atoms, especially the methylbis (tetradecyl) ammonium or methylbis (octadecyl) cation ) ammonium, R8, independently of each occurrence is hydrogen or a hydrocarbyl, halocarbyl, silylhydrocarbyl or silyl group (including mono, di and tri (hydrocarbyl) silyl) of up to 30 carbon atoms without counting hydrogen, preferably alkyl of 1 to 20 atoms of carbon, and J1 is tris (pentafluorophenyl) borane or tris (pentafluorophenyl) aluminan. Examples of these catalyst activators include trihydrocarbammonium salts, especially methylbis (tetradecyl) ammonium or methylbis (octadecyl) ammonium salts of: Bis (tris (pentafluorophenyl) borane) imidazolide, bis (tris (pentafluorophenyl) borane) 2-undecyl imidazolide, bis (tris (pentafluorophenyl) borane) 2-heptadecyl imidazolide, bis (tris) 4, 5-bis (undecyl) imidazolide (pentafluorophenyl) borane), 4, 5-bis (heptadecyl) imidazolide of bis (tris (pentafluorophenyl) borane), imidazolinide of bis (tris (pentafluorophenyl) borane), 2-undecylimidazolinide of bis (tris (pentafluorophenyl) borane), - bis (tris (pentafluorophenyl) borane) amino acid, 4, 5-bis (undecyl) imidazolinide of bis (tris (pentafluorophenyl) borane), 4, 5-bis (heptadecyl) imidazolinide of bis (tris (pentafluorophenyl) borane), 5,6-dimethylbenzimidazolide bis (tris (pentaf luorofenyl) borane), 5, d-bis (undecyl) benzimidazolide bis (tris (pentaf luorofenil) boran o), midazolide bis (tris (pentafluorophenyl) alumano) 2-undecyl imidazolide of bis (tris (pentafluorophenyl) aluman), 2-heptadecylimidazolide of bis (tris (pentafluorophenyl) aluman), 4,5-bis (or ndecyl) imidazolide of bis (tris) is (aliphatic pentafluorophenyl), 4,5-bis (heptadecyl) imidazolide bis (tris (pentafluorophenyl) aluman), imidazolinide bis (tris (pentafluorophenyl) aluman), 2-undecylimidazolinide bis (tris (pentafluorophenyl) aluman), 2-heptadecylimidazo! Inida of bis (tris (pentafluorophenyl) alumano), 4, 5-bis (undeci i) imidazoliida of bis (tris (pentafluorophenyl) alumano), 4, 5-bis (heptadecyl) imidazolinide of bis (tris (pentaf Ioropheni I) alu) 5,6-di methyl benzimidazolide of bis (tris (pentafluorophenyl) aluman), and 5,6-bis (undecyl) benzimidazoiide of bis (tris (pentafluorophenyl) alu). The bulk electrolysis technique involves the electrochemical oxidation of the metal complex under electrolysis conditions in the presence of a supporting electrolyte comprising an inert anion, without coordination. In the art, solvents, support electrolytes and electrolytic potentials are used for electrolysis so that the electrolysis by-products that could render the metal complex catalytically inactive are not substantially formed during the reaction. More particularly, suitable solvents are materials that are: liquids under the conditions of electrolysis (generally at temperatures of 0 to 100 ° C), capable of dissolving the supporting electrolyte, and inert. "Inert solvents" are those that are not reduced or oxidized under the reaction conditions used for electrolysis. It is generally possible in view of the desired electrolysis reaction to select a solvent and a supporting electrolyte that are not affected by the electrical potential used for the desired electrolysis. Preferred solvents include difluorobenzene (all isomers), dimethoxyethane (DME), and mixtures thereof. The electrolysis can be conducted in a standard electrolytic cell containing an anode and cathode (also referred to as the working electrode and electrode, respectively). The materials suitable for the construction of cells are glass, plastic, ceramic and metal coated with glass. The electrodes are prepared from inert conductive materials, which means that they are not affected by the reaction mixture or reaction conditions. Platinum or palladium are preferred inert conductive materials. Usually, an ion permeable membrane such as a fine glass frit separates the cell into separate compartments, the working electrode compartment and the counter electrode compartment. The working electrode is immersed in a reaction medium comprising the metal complex to be activated, solvent, support electrolyte and any other materials desired to moderate the electrolysis or stabilize the resulting complex. The counter electrode is immersed in a mixture of the solvent and supporting electrolyte. The desired voltage can be determined through theoretical calculations or experimentally by sweeping the cell using a reference electrode electrode such as a plate electrode submerged in the cell electrolyte. The background cell current, the current expelled in the absence of electrolysis, is also determined. The electrolysis is completed when the current falls from the desired level to the previous level. In this way, the complete conversion of the initial metal complex can be easily detected. Suitable supporting electrolytes are salts comprising a cation and a non-coordinating anion, compatible, A-. The preferred support electrolytes are salts corresponding to the formula G + A "; wherein: G + is a cation that is non-reactive to the starting and resulting complex, and A-s as previously defined.

Examples of cations, G +, include ammonium or tetrahydrocarbyl substituted phosphonium cations having up to 40 non-hydrogen atoms. Preferred cations are tetra (n-butylammonium) cations and tetraethylammonium cations. During the activation of the complexes of the present invention through bulk electrolysis, the cation of the supporting electrolyte passes to the counter electrode and A migrates to the working electrode to become the anion of the resulting oxidized product. Both the solvent and the supporting electrolyte cation are reduced in the counter electrode by an amount equal to molar with the amount of oxidized metal complex formed in the working electrode. Preferred support electrolytes are tetrahydrocarbylammonium or tetrakis (fluoroaryl) borate salts having from 1 to 10 carbons in each hydrocarbyl or perfluoroaryl group, especially tetrakis (pentafluorophenyl) borate of tetra (n-butylammonium). An additional newly discovered electrochemical technique for the generation of activating cocatalysts is the electrolysis of a disilane compound in the presence of a source of a compatible anion without coordination. This technique is described more specifically and is claimed in the patent application of E. U. A. previously mentioned series No. 304,314, published in equivalent form to WO96 / 08519. The prior electrochemical activation technique and activation cocatalysts can also be used in combination. An especially preferred combination is a mixture of a tris (hydrocarbyl) aluminum or tri (hydrocarbyl) borane compound having from 1 to 4 carbon atoms in each hydrocarbyl group with an oligomeric or polymeric alumoxane compound. The molar ratio of catalyst / cocatalyst employed preferably ranges from 1: 10,000 to 100: 1, most preferably from 1: 5000 to 10: 1 and preferably from 1: 1000 to 1: 1. Alumoxane, when used by itself as an activating cocatalyst, it is employed in a large amount, generally at least 100 times the amount of the metal complex on a molar basis. The tris (pentafluorophenyl) borane when used as an activating cocatalyst is sent in a molar ratio to the metal complex of 0.5: 1 to 10: 1, preferably 1: 1 to 6: 1 and most preferably 1: 1. to 5: 1. The remaining activating cocatalysts are generally employed in an approximately equimolar amount with the metal complex. The catalysts, whether supported or not supported in any of the above methods, can be used to polymerize ethylenically and / or acetylenically unsaturated monomers having from 2 to 100,000 carbon atoms either alone or in combination. Preferred monomers include the α-olefins of 2 to 20 carbon atoms especially ethylene, propylene, isobutylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-pentene, 4-methyl-1-pentene, 1-ketene, 1-decene, long chain macromolecular α-olefins and mixtures thereof. Other preferred monomers include styrene, alkyl substituted styrene of 1 to 4 carbon atoms, tetrafluoroethylene, vinylbenzocyclobutane, ethylidenenorbornene, 1,4-hexadiene, 1,7-octadiene, vinylcyclohexane, 4-vinylcyclohexene, divinylbenzene and mixtures thereof with ethylene. Long chain macromolecular α-olefins are vinyl-terminated polymeric remnants formed in situ during continuous solution polymerization reactions. Under suitable processing conditions said long chain macromolecular units are easily polymerized in the polymer product together with the ethylene and other short chain olefin monomers to give small amounts of long chain branching in the resulting polymer. Preferred monomers include a combination of ethylene and one or more comonomers selected from monovinyl aromatic monomers, 4-vinylcyclohexene, vinylcyclohexane, norbonadiene, ethylidene norbornene, aliphatic α-olefins of 3 to 10 carbon atoms (especially propylene, isobutylene, 1 -butene, 1 -hexene, 3-methyl-1 -pentene, 4-methyl-1 -pentene, and 1-ketene) and dienes of 4 to 40 carbon atoms. The most preferred monomers are mixtures of ethylene and styrene; mixtures of ethylene, propylene and styrene; mixtures of ethylene, styrene and a non-conjugated diene, especially ethylene norbornene or 1,4-hexadiene, and mixtures of ethylene, propylene and a non-conjugated diene, especially ethylidene norbornene or 1,4-hexadiene. In general, the polymerization can be achieved under conditions well known in the prior art for polymerization reactions of the Ziegler-Natta or Kaminsky-Sinn type, that is, temperatures of 0-250 ° C, preferably from 30 to 200 ° C. ° C and atmospheric pressures to 10,000 atmospheres. If desired, powder polymerization can be employed in the suspension, solution, slurry, gas phase, and solid state or other process conditions. A support may be employed, especially silica, alumina or a polymer (especially polytetrafluoroethylene or a polyolefin), and desirably used when the catalysts are used in a gas phase polymerization process. The support is preferably used in an amount to provide a weight ratio of catalyst (based on the metal): support from 1: 100,000 to 1:10, preferably from 1: 50,000 to 1:20 and most preferably from 1 : 10,000 to 1: 30. In most polymerization reactions, the molar ratio of catalyst: polymerizable compounds employed is from 10"12.1 to 0.01, most preferably 10" 9.1 to 10"5.1.The suitable solvents used for solution polymerization are inert liquids. Examples include straight and branched chain hydrocarbons such as isobutane, butane, pentane, hexane, heptane, octane and mixtures thereof: cyclic and alicyclic hydrocarbons such as cyclohexane, cycloheptane, methylcyclohexane, methylcycloheptane and mixtures thereof perfurated hydrocarbons such as perfluorinated 4- to 10-carbon alkanes, and alkyl-substituted aromatic compounds such as benzene, toluene, xylene and ethylbenzene Suitable solvents also include liquid olefins, which can act as monomers or comonomers Catalysts can be used in combination with at least one homogenous or heterogeneous polymerization catalysts additional eo in the same reactor or separate reactors connected in series or in parallel to prepare polymer blends having desirable properties. An example of said process is described in WO 94/00500, equivalent to the patent of E. U. A. Series No. 07 / 904,770, as well as US Patent Series No. 08/10958, filed January 29, 1993. Using the catalysts herein, homopolymers and copolymers are easily obtained in a highly efficient process. of α-olefin having densities of 0.85 g / cm3 to 0.96 g / cm3, and melt flow rates of 0.001 to 1000.0 dg / min. The catalysts of the present invention are particularly advantageous for the production of ethylene homopolymers and ethylene / α-olefin copolymers having high levels of long chain branching. The use of the catalysts of the present invention in continuous polymerization processes, especially continuous solution polymerization processes, allows high reactor temperatures, which favor the formation of vinyl-terminated polymer chains, to be incorporated into the developing polymer. thus giving a long chain branching. The use of the catalyst compositions of the present invention advantageously allows the economical production of ethylene / α-olefin copolymers having a processability similar to the high pressure free radical that produces low density polyethylene. The catalyst compositions herein can be advantageously employed to prepare olefin polymers having improved processing properties by polymerizing ethylene alone or ethylene / α-olefin mixtures with low levels of an "H" branching induction diene, such as norbornadiene, 1, 7-octadiene or 1, 9-decadiene. The only combination of elevated reactor temperaturesHigh molecular weight (or low melt indexes) at high reactor temperatures and high comonomer reactivity advantageously allow the economical production of polymer having excellent physical properties and processability. Preferably, said polymers comprise ethylene, an α-olefin of 3 to 20 carbon atoms and a branching comonomer "H". Preferably, said polymers are produced in a solution process, most preferably a continuous solution process. The catalyst composition can be prepared as a homogeneous catalyst through the addition of requisite components to a solvent or diluent wherein the polymerization will be conducted. The catalyst composition can also be prepared and used as a heterogeneous catalyst by absorbing, depositing or chemically bonding the requisite components in an inorganic or inert organic solid. Examples of such solids include, silica, silica gel, alumina, clays, expended clays (aerogels), aluminosilicates, tricalkylaluminium compounds, and organic or inorganic polymeric materials, especially polyolefins. In a preferred embodiment, a heterogeneous catalyst is prepared by reacting an inorganic compound, preferably a tri (alkyl of 1 to 4 carbon atoms) aluminum compound with an activating cocatalyst, especially an ammonium salt of a hydroxyaryl (trispentafluorophenyl) borate. such as an ammonium salt of (4-hydroxy-3,5-di-tertiary butyl-phenyl) tris- (pentafluorophenyl) borate or (4-hydroxyphenyl) -tris (pentafluorophenyl) borate. This activating cocatalyst is deposited on the support by any coprecipitation, imbibition, spraying, or similar technique, and then removing any solvent or diluent. The metal complex is added to the support, also by adsorption, deposition or by chemically bonding the same to the support, either subsequently, simultaneously or before the addition of the activating cocatalyst. When prepared in a heterogeneous or supported form, the catalyst composition is employed in a slurry or gas phase polymerization. As a practical limitation, slurry polymerization occurs in liquid diluents wherein the polymer product is substantially insoluble. Preferably, the diluent for the slurry polymerization is one or more hydrocarbons with less than 5 carbon atoms. If desired, saturated hydrocarbons such as ethane, propane or butane may be used wholly or in part as the diluent. Also, the α-olefin monomer or a mixture of different α-olefin monomers can be used as a whole or part of the diluent. Most preferably, at least one main part of the diluent comprises the α-olefin monomer (s) to be polymerized. At all times, the individual ingredients as well as the recovered catalyst components must be protected from oxygen and moisture. Therefore, catalyst components and catalysts must be prepared and recovered in an atmosphere free of oxygen and moisture. Preferably, therefore, the reactions are carried out in the presence of an inert, dry gas such as, for example, nitrogen. The polymerization can be carried out as an intermittent or continuous polymerization process. A continuous process is preferred, wherein in case of catalyst, ethylene, comonomer and the optional solvent are continuously supplied to the reaction zone and the polymer product is continuously removed therefrom. Without limiting the scope of the invention in any way, a means for carrying out said polymerization process is as follows: in a stirred tank reactor, the monomers to be polymerized are continuously introduced together with a solvent a chain transfer agent optional. The reactor contains a liquid phase composed substantially of monomers together with any additional solvent or diluent and dissolved polymer. If desiredA small amount of a branching induction diene "H ° such as norbornadiene, 1,7-octadiene or 1,9-decadiene can also be added.The catalyst and cocatalyst are continuously introduced into the reactor liquid phase. and the pressure of the reactor, can be controlled by adjusting the solvent / monomer ratio, the rate of catalyst addition, as well as through coils, cooling or heating jackets, or both.The speed of polymerization is controlled through the speed of catalyst addition The ethylene content of the polymer product is determined by the ratio of ethylene to comonomer in the reactor, which is controlled by manipulating the respective feed rates of these components into the reactor. it is controlled, optionally, controlling other polymerization variables such as temperature, monomer concentration or tr through the above-mentioned chain transfer agent, such as a stream of hydrogen introduced into the reactor, as is well known in the art. The reactor effluent is contacted with a catalyst annihilation agent such as water. The polymer solution is optionally heated, and the polymer product is recovered by vaporizing gaseous monomers as well as the residual solvent or diluent under reduced pressure, and, if necessary, conducting further devolatilization in equipment such as a devolatilization extruder. In a continuous process, the average residence time of the catalyst and the polymer in the reactor is generally from about 5 minutes to 8 hours, and preferably from 10 minutes to 6 hours. By using a catalyst incorporating large amounts of hindered monovinyl monomer, the hindered monovinyl homopolymer formed from the residual amounts of the monomer is substantially reduced. The ethylene homopolymers and the ethylene / α-olefin copolymers are particularly suitable for the preparation according to the invention. In general, said polymers have densities of 0.88 to 0.96 g / ml. Typically, the molar ratio of α-olefin comonomer to ethylene used in the polymerization can be varied in order to adjust the density of the resulting polymer. When materials with a density scale of 0.91 to 0.93 are produced, the ratio of comonomer to monomer is less than 0.2, preferably less than 0.05, and still most preferably less than 0.02, and even less than 0.01. In the above polymerization process, it has been found that hydrogen effectively controls the molecular weight of the resulting polymer. Typically, the molar ratio of hydrogen to monomer is less than about 0.5, preferably less than 0.2, preferably less than 0.05 and still most preferably less than 0.02, and even more less than 0.01.

EXAMPLES Those skilled in the art will appreciate that the invention described herein can be practiced in the absence of any component that has not been specifically described. The following examples are provided as a further illustration of the invention and are not constructed as limiting. Unless stated otherwise, all parts and percentages are expressed on a weight basis. The term "overnight", if used, refers to a time of about 16-18 hours, the term "room temperature" refers to a temperature of about 20-25 ° C, and the term "mixed alkanes" refers to a commercially obtained mixture of aliphatic hydrocarbons of 6 to 8 carbon atoms available under the trademark designation of Isopar E® from Exxon Chemicals Inc. The 1 H spectra (300 MHz and 13 C NMR (75 MHz) were recorded in a Varian XL-300 spectrometer, the 1 H and 13 C NMR spectra are denominated for the residual solvent peaks and are reported in ppm relative to tetramethyl-ish.All values of J are given in Hz. Tetrahydrofuran (THF) was used, diethyl ether, toluene, and hexane after passage through double columns loaded with activated alumina and a purification catalyst (Q-5® available from Englehardt Chemicals Inc.) The compounds BCI3-SMe2, BBr3-SMe2) 3, n- BuLi all were used as they were bought from Aldrich. The compound TiCl3 (THF) 3 was prepared as follows in the literature. All the syntheses were carried out under nitrogen or dry argon atmospheres using a combination of glove box and high vacuum techniques.

Example 1 Titanium dichloro [1,2-Bis (2,6-diisopropylanilide) -1, 2- bs (dimethylamido) diborane] 1 A) Preparation of chlorobis (dimethylamido) borane, (modification of Chavant, P. Y., Vaultier, M. J. Organomet, Chem. 1993, 455, 37-46).

BCI3-SMe2 (62,000 g, 345.78 mmol) and B (NMe2) 3 (98.921 g, 691.56 mmol) were stirred together at room temperature overnight under a nitrogen sparger. The mixture was then heated to reflux for 1 hour to drive any SMe2. Stirring the pale yellow liquid at room temperature resulted in the isolation of the desired product in clean form (44.979 g, 99.9% yield). 1 H NMR (C6D6): 52.49 (s, 12 H). 13C NMR (C6D6): 539.86. 1B) Preparation of tetrakis (dimethylamido) diborane (modification of Noth, H, Meister, W. Z. Naturforsch., Teil B 1962, 17, 714). Chlorobis (dimethylamido) borane (30,000 g, 223. 19 mmoles) in 200 ml of hexane as a Na / K alloy [Na (1.539 g, 66.96 mmoles) /8.726 g K (8.726 g, 223.19 mmoles)] and added dropwise to the solution. After several drops, the reaction started as evidenced by a sudden increase in reflux. The heating was then stopped and the alloy added slowly in order to maintain a reflux. After the addition was complete, the reaction mixture was refluxed for a further hour and then stirred at room temperature for 3 hours. The mixture was then filtered through a pad of diatomaceous earth and the volatiles removed resulted in yellow liquid isolation. Fractional vacuum distillation resulted in the isolation of the desired compound as a pale yellow liquid (7.756 g, 35.1% yield). 1 H NMR (C6D6): 52.74 (s, 24 H). 13C NMR (C6D6): 541.34. 1C) Preparation of Bis (dimethylamido) diboro dichloride (Purification of Noth, H; Meister, W. Z. Naturforsch., Teil B 1962, 17,714). Tetrakis (dimethylamido) diborane (7.76 g, 39.29 mmol) was stirred in 100 ml of diethyl ether at -78 ° C as HCl (157 mmol, 157 ml of a 1.0 M solution in diethyl ether) was added dropwise. This mixture was then allowed to stir for 6 hours at room temperature. After the reaction period, the volatiles were removed and the residue was extracted and filtered using hexane. The removal of the hexane resulted in the isolation of a yellow oil. Fractional vacuum distillation resulted in the isolation of the desired compound as a pale yellow liquid (4.72 g, 66.7% yield). 1H NMR (C6D6): 52.40 (s, 6 H), 2.50 (s, 6H). 13C NMR (C5D6): 537.62, 41.78. 1 D) Preparation of lithium salt of 2,6-diisopropylaniline. N-BuLi (56.4 mmol, 35.3 mL of a 1.60 M solution in hexane) was added dropwise to a solution of 2,6-diisopropylaniline (10.0 g, 56.4 mmol) in 100 mL of hexane. This mixture was allowed to stir for 3 hours, during which time a white precipitate formed. After the reaction period, the mixture was filtered and the white salt was washed with hexane and dried under vacuum and used without purification or further analysis (9.99 g, 96.7%). 1 E) Preparation of 1,2-bis (2,6-diisopropylanilide) -1,2-bis (dim eti lido) dibro-rano. Bis (dimethylamido) diboro dichloride (2.35 g, 13.0 mmol) in 10 ml of diethyl ether was added dropwise to a solution of lithium salt of 2,6-diisopropylaniline (4.77 g, 26.0 mmol) in 50 ml of ether diethyl at 0 ° C. The mixture was then allowed to stir overnight at room temperature. After the reaction period, the volatiles were removed and the residue was extracted and filtered using hexane. Removal of hexane resulted in the isolation of a desired product as a white solid (5.32 g, 88.9% yield). 1 H NMR (C6D6, RT): 50.9-1 .4 (br m, 24 H), 2.3 (s, 6 H), 2.8 (s, 6 H), 3.7 (s, 2 H), 7.0 (br s , 6 H). 1 F) Preparation of dilithium salt of 1,2-bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) diborane. 1, 2-Bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) -diborane (1.82 g, 3.95 mmol) was stirred in 75 ml of hexane and n-BuLi (7.91 mmoles) was added dropwise. 4.94 ml of a 1.60 M solution in hexane). This mixture was then allowed to stir overnight.

After the reaction period, the mixture was filtered and the salt was washed well with hexane and dried under vacuum resulting in the isolation of the desired product as a white powder (1.69 g, yield of 90.4%). 1 G) Preparation of titanium of didoro [1,2-bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) diborane]. Lithium salt of 1,2-bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) diborane (0.60 g, 1.27 mmoles) in 20 ml of TH F was added dropwise to a slurry. TCI3 (TH F) 3 (0.47 g, 1.27 mmole) in 50 ml of THF at 0 ° C. This mixture was then allowed to stir at room temperature for 45 minutes. Then PbCl2 (0.177 g, 0.640 mmol) was added as a solid and the mixture was allowed to stir for an additional 30 minutes. After the reaction period, the volatiles were removed and the residue was extracted and filtered using hexane. Concentration of hexane and cooling to -10 ° C overnight resulted in the formation of orange x-ray quality crystals (0.156 g, 21.3% yield). 1 H NMR (C6D6): 51.23 (d, 3 JHH = 6.6 Hz, 6 H), 1.45 (d, 3 JHH = 6.6 Hz, 6 H), 2.17 (s, 6 H), 2.76 (s, 6 H), 3.53 (septet, 3JHH = 6.6 Hz, 4 H), 7.1 1 (s, 6 H).

Example 2 Titanium dichloro [1,2-Bis (2,6-diisopropylanilide) -1, 2- bis (dimethylamido) diborane] (alternative preparation) 2A) Preparation of chlorobis (dimethylamido) borane. BCI3-SMe2 (62,000 g, 345.78 mmol) and B (NMe2) 3 (98.921 g, 691.56 mmol) were stirred together at room temperature overnight under a nitrogen sparger. The mixture was then heated to reflux for 1 hour to drive any residual SMe2. Allowing the stirring at room temperature of pale yellow liquid resulted in the isolation of the desired product (139.436 g, yield 93.3%). 1 H N MR (C6D6): 52.49 (s, 12 H). 13C NMR (C6D6): 539.86. 2B) Preparation of tetrakis (dimethylamido) diborane through CI B (NMe) 2. Chlorobis (dimethylamido) borane (30,000 g, 223. 19 mmoles) in 200 ml of hexane as it was added dropwise to the solution as a Na / K alloy [Na (1539 g, 66.96 mmoles) 8.726 g K (8.726 g, 223.19 mmoles)]. After several drops, the reaction started as evidenced by a sudden increase in reflux. The heating was then stopped and the alloy added slowly in order to maintain a reflux. After completing the addition, the reaction mixture was heated to reflux for a further hour and then stirred at room temperature for 3 hours. The mixture was then filtered through a pad of diatomaceous earth and the volatile components were removed resulting in the isolation of a yellow liquid. Fractional vacuum distillation resulted in isolation of the desired compound as a pale yellow liquid (7,756 g, yield of 35.1%). 1 H NMR (C6D6): 62.73 (s, 24 H). 13C NMR (C6D6): 541.37. 2C) Preparation of tetrakis (dimethylamido) diborane through bis (catechol ato) di boron. Slowly add lithium dimethylamide (10.70 g, 210.0 mmol) as a solid to a solution of bis (catecholate) diboro (10.00 g, 42.00 mmol) of diethyl ether at -20 ° C. The mixture was then allowed to stir for a further 40 hours at room temperature. After the reaction period, the ether was removed under vacuum and the residue was extracted and filtered using hexane. The removal of the hexane resulted in the isolation of a yellow oil. Fractional vacuum distillation resulted in the isolation of the desired compound as a pale yellow liquid (5,493 g, 66.0% yield). 2D) Preparation of Bis (dimethylamido) diboro dichloride. Tetrakis (dimethylamido) diborane (7756 g, 39.19 mmol) in 100 ml of diethyl ether was stirred at -78 ° C as HCl (156.75 mmol, 156.75 ml of a 1.0 M solution in HCl) was added dropwise. diethyl ether). This mixture was then allowed to stir for 6 hours at room temperature. After the reaction period, the volatile components were removed and the residue was extracted and filtered using hexane. The removal of the hexane resulted in the isolation of a yellow oil. Fractional vacuum distillation resulted in the isolation of the desired compound as a pale yellow liquid (4722 g, 66.7% yield). 'H NMR (C6D6): 52.40 (s, 6 H), 2.50 (s, 6H). 13C NMR (C6D6): 537.62, 41.78. 2E) Preparation of lithium salt of 2,6-diisopropylaniline. N-BuLi (56.40 mmol, 35.25 ml of a 1.6M solution in hexane) was added dropwise to a solution of 2,6-diisopropylaniline (10.00 g, 56.40 mmol) in 100 ml of hexane. This mixture was allowed to stir for 3 hours, during which time a white precipitate formed. After the reaction period, the mixture was filtered and the white salt was washed with hexane and dried under vacuum and used without purification or further analysis (9.988 g, 96.7%). 2F) Preparation of 1,2-bis (2,6-diisopropylanilide) -1,2-bis (di methylamide) borane. Bis (dimethylamido) diboro dichloride (2350 g, 13.00 mmol) in 10 ml of diethyl ether was added dropwise to a solution of lithium salt of 2,6-diisopropylaniline (4.765 g, 26.01 mmol) in 50 ml of ether diethyl at 0 ° C. The mixture was then allowed to stir overnight at room temperature. After the reaction period, the volatiles were recovered and the residue was extracted and filtered using hexane. Removal of hexane resulted in the isolation of a desired product as a white solid (5322 g, 88.9% yield). 1 H NMR (toluene-d8): 50.9-1.4 (br m, 24 H), 2.3 (s, 6 H), 2.8 (s, 6 H), 3.7 (s, 2 H), 7.0 (br s) , 6 H). 13C NMR (toluene-d8): 522.51, 24.03 (BR), 28.17, 36.82, 42.67, 123.19, 124.78, 140.71, 145.02 (br). MS (EI): m / z 460.4025 (M-H) +, cale. (M-H) + 460.4026. 2G) Preparation of dilithium salt of 1,2-bis (2,6-diisopropylanilide) -1, 2-bis (d imeti mido) di boran. 1, 2-Bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) -diborane (1.820 g, 3950 mmol) was stirred in 75 ml of hexane as n-BuLi was added dropwise. (7.91 mmol, 4.94 ml of a 1.6 M solution in hexane). This mixture was then allowed to stir overnight. After the reaction period, the mixture was filtered and the salt was washed well with hexane and dried under vacuum resulting in the isolation of the desired product as a white powder (1.6878 g, 90.4% yield). 1 H NMR (THF-d8): 51.04 (d, 3 JHH = 6.9 Hz, 6 H), 1.18 (d, 3 JHH = 6.9 HZ, 6 H), 2.45 (s, 12 H), 3.66 (septet, 3J HH = 6.9 HZ, 4 H), 6.29 (t, 3JHH = 7.5 Hz, 2H), 6.73 (d, 3J HH = 7.5 HZ, 4 H). 13C NMR (TH F-d8): 524.88, 25.34, 28.00, 40.91, 1 14.40, 121.95, 137.21, 158.76. 2H) Preparation of titanium of dichloro [1,2-bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) diborchid]. Lithium salt of 1 was added dropwise, 2-bis (2,6-diisopropilanilida) -1, 2-bis (dimethylamido) diborane (0.600 g, 1 0.27 mmol) in 20 mL of THF to a slurry of TiCI3 (TH F) 3 (0.471 g, 1 .27 mmoles) in 50 ml of THF at 0 ° C. This mixture was then allowed to stir at room temperature for 45 minutes. Then PbCl2 (0.177 g, 0.640 mmol) was added as a solid and the mixture was allowed to stir for an additional 30 minutes. After the reaction period, the volatiles were removed and the residue was extracted and filtered using hexane. Concentration of the hexane fractions and cooling to -10 ° C overnight resulted in the formation of orange x-ray quality crystals (0.156 g, 21.3% yield). ORTEP crystal structure (not necessarily to scale) based on X-ray analysis is found in Figure 1. 1 H NMR (d8 toluene): 51.23 (d, 3 J HH = 6.6 Hz, 6H), 1.45 (d, 3 J HH = 6.6 Hz, 6H), 2.17 (s, 6H), 2.76 (s, 6H), 3.53 (septet, 3 J HH = 6.6 Hz, 4 H), 7.11 (s, 6H). 13C NMR (toluene d8): 524.94, 24.67, 29.48, 39.33, 42.93, 124.08 (br), 17.23, 150.64. MS (EI): m / z 578.2789 (M) +, cale. 578.2781. Anal. Cale. For C28H46B2N2TiCl2: C, 58.07; H, 8.01; N, 0.67. It was found: C, 8.28; H, 820; N, 9.42.

Example 3 Titanium of [1,2-Bis (2,6-diisopropylanilide) -1, 2- bis (dimethylamido) diborane] Titanium of [1,2-Bis (2,6-diisopropylamino) -1,2-bis (dimethylamido) diborane] (Example 2) (0.272 g, 0.470 mmol) in 40 ml of diethyl ether was stirred as it was added. drop by drop MeMgBr (0.940 mmoies, 0.313 ml of a 3.0 solution in diethyl ether). This mixture was allowed to stir for 1 hour. After the reaction period, the volatiles were removed and the residue was extracted and filtered using hexane. Removal of hexane resulted in the isolation of the desired product as a dark yellow oil (0.209 g, 82.5% yield). 1H NMR (C6D6): 51.05 (s, 6 H), 1.21 (d, 3 JHH = 6.9 Hz, 16 H), 1.32 (d, 3 JHH = 6.3 Hz, 16 H), 2.19 (s, 6 H), 2.69 ( s, 6 H), 3.58 (br, 2H), 7.0-7.2 (m, 6 H). 13C NMR (C6-C6): 524.06, 24.83, 29.31, 39.58, 42.93, 57.38, 123.97, 125.18, 139.5 (br), 149.45.

Example 4 Zirconium of dibenzyl [1,2-bis (2,6-diisopropylanilide) -1,2-b? S (dimethylamido) diborane] Zirconium tetachloride (0.100 g, 0.440 mmol) and tetrabenzyl zirconium (0.192 g, 0.440 mmol) were stirred together in 30 ml diethyl ether for 1 hour. Then, dilithium salt of 1,2-bis (2,6-diisopropylanilide) -1,2-bis (dimethylamido) diborane (Example 2G) (0.400 g, 0.842 mmol) in 30 ml of diethyl ether was added dropwise. the mixture was allowed to stir for 3 hours. After the reaction period, the volatiles were removed under vacuum and the residue was extracted and filtered using hexane. The filtrate was then concentrated and cooled to -10 ° C overnight, during which time a white powder was precipitated. The mixture was filtered again and the volatile components removed resulted in the isolation of the desired product as a yellow product (0.123 g, yield 19.8%). * H NMR (toIueno-d8): 51.14 (d, 3JHH = 6.6 Hz, 6 H), 1.22 (br, 6 H), 1.70 (d, 3JHH = 9.0 Hz, 2 H), 1.83 (d, 3JHH = 9.6 Hz, 2 H), 2.10 (s, 6 H), 2.71 (s, 6 H), 3.0-3.2 (br, 2 H), 3.3-3.5 (br, 2 H), 6.59 (t, 3JHH = 7.2 Hz , 4 H), 6.77 (t, 3 JHH = 7.2 Hz, 2H), 6.9-7.1 (m, 10 H). 13C NMR (toluene-d8): 523.96 (br), 24.22 (br), 24.36 (br), 25.23 (br), 29.47 (br), 29.49, 39.72, 43.05, 62.23, 122.70, 123.73 (br), 124.08 ( br), 124.33, 127.23, 130.82, 139.26 (br), 140.16 (br), 144.90, 144.92, 149.03.

Example 5? 4-1,4-Diphenyl-1,3-butadiene of rac-diisopropylamidoborane-bis-? 5- (2-methyl-4-phenUinden-1-yl) zirconium 5A) Preparation of diisopropylamine boron dichloride. To a solution of methylene chloride of trichloroborane (1.0 M, 100 ml, 0.10 moles) was added dropwise at -78 ° C diisopropylamine (13108 ml, 0.100 moles) over a period of 30 minutes. The solution was allowed to stir for 1 hour, during which a white precipitate formed. The mixture was allowed to warm to room temperature and the solvent was removed under reduced pressure. The residue was dissolved in 100 ml of dry toluene, triethylamine (13.94 ml, 0.10 mole) was added and the solution was stirred overnight at room temperature. The mixture was filtered and the residue was washed with 20 ml of toluene. The solvent was removed under reduced pressure from the combined filtrates, and the resulting oil was purified by vacuum distillation (25-28 ° C, 13 Pa, 0. 1 mm) to give 9.2 g (51%) of the product as a colorless liquid. 1 H NMR (C6D6): 5 0.95 (d, 12 H), 3.63 (broad multiple, 2 H). 5B) Preparation of N, N-diisopropylamino bis (2-methyl-4-phenylindenyl) borane. To 25 ml of a THF solution of N, N-diisopropylamino boron dichloride (0.858 g, 4.72 mmol) at room temperature was added dropwise (lithium 2-methyl-4-phenyl) indenide (2.00 g, 9.44 mmol). in 20 ml of TH F). The mixture was stirred for 24 hours. The solvent was removed under reduced pressure. The residue was extracted with toluene (2x50 ml), filtered through a medium frit, and the solvent was removed under reduced pressure to give a light yellow solid (2.4 g, 97%). 5C) Preparation of? -1, 4-diphenyl-1,3-butadiene of rac-diisopropylaminoborane-bis-? 5- (2-methyl-4-phenylindenyl) zirconium. N, N-dusopropylamino bis (2-methyl-4-phenylindenyl) borane (1.20 g, 2.3 mmol) was dissolved in 40 ml of toluene, 2.1 equivalents of potassium bis (trimethylsilyl) amide (0.964 g, 4.8) were added. mmoles) and the resulting mixture was stirred at room temperature for 24 hours. The volatile components were removed under reduced pressure, and the resulting orange solid was washed with 10 ml of hexane, filtered and pumped dry. The dipotassium salt residue (1.3 g, 95%, 2.18 mmol) was redissolved in 25 ml of toluene. Dichloride of (1,4-d if in i-1,3-butadiene) -bis (triethylphosphine) zirconium (1.318 g, 2.18 mmoles) was added and the solution was stirred for 12 hours at room temperature. The product mixture was filtered through a diatomaceous earth filter aid and the filter solvent was removed under reduced pressure. Further purification was performed through recrystallization from hexane to yield 0.87 g (48%) of the desired product as a dark red solid. The ORTEP crystal structure (not necessarily to scale) based on x-ray analysis, is found in Figure 2. 1 H NMR (C6D6): 57.6 (d, 2H); 7.42-7.00 (m, 18 H); 6.9 (d, 2H); 6.82 (d, 4H); 5.57 (s, 2H); 4.03 (m, 2H); 3.45-3.57 (dd, 2H); 1.8 (s, 6H); 1 .28-1 .33 (m, 12H).

Example 6 Preparation of diisopropylamidoboran-bis- (cyclopentadienyl) zirconium dichloride 6A) Diisopropylamidoboron dichloride. To a solution of BCI3 (17 g, 145 mmol) in CH2Cl2 (25 mL) at -78 ° C, diisopropylamine (18.49 mL, 132 mmol) was added slowly. A white precipitate formed during the addition. The mixture was warmed to room temperature to give a colorless solution. The solvent was removed under high vacuum at room temperature, the residue was then dissolved in 45 ml of benzene. Triethylamine (18.8 ml, 134.6 mmol) was added to the solution at room temperature, the mixture was then stirred overnight at room temperature, and then filtered to give a red solution. Vacuum distillation (28-28 ° C, 4 Pa) gave the product 15 g, 57%) as a colorless liquid: 1 H NMR (5000 MHz, CDCl 3) d 1.26 (d, 12 H, J = 5.8 Hz), 3.95 (br, 2H, NCH) 13 C NMR (100 MHz, CDCl 3) d 22.1, 49.2 (br). 1 1B NMR (115 MHz, CDC13) 29.4. MS (El,, m / e (intensity)): 181 (M +, 5) 166 (43), 124 (61), 43 (100). 6B) Diisopropylamidobis (cyclopentadienyl) borane. To a solution of the above product (0.39 g, 2.1 mmol) in TH F (5 mL) at -78 ° C was added dropwise a solution of lithium cyclopentadienide (0.31 g, 2.1 mmol) in 10 mL of THF a -78 ° C. The mixture was slowly warmed to room temperature and stirred overnight at room temperature to give a red color solution. After removal of the solvent, the residue was extracted with pentane (3x), filtered, and the pentane was then stirred to give the product (0.45 g, 100%) as a yellow syrup. 13B NMR (1 15 MHz, C6D), d 39.8 (major), 30.4 (minor). MS (El, m / e (intensity)): 241 (M +, 47), 226 (40), 176 (16), 93 (100). The GC-MS was also recorded in the reaction mixture just after the mixing of the two reagents at -78 ° C, after which only cyclopentadienyldiisopropylboron chloride was detected: MS (El, m / e (intensity)): 21 1 (M +, 24), 196 (100 =, 154 (22). 6C) Diisopropylamidobornylcyclopentadienide of dilithium. To a solution of the above product (0.61 g, 2.53 mmol) in THF (7 mL) at -78 ° C was added lithium diisopropylamide (5.57 mmol, prepared in situ from diisopropylamide (0.780 mL, 5.57 mmol) and BuLi. (2.50 M, 2.23 mL, 5.57 mmol) The mixture was warmed to room temperature and stirred for 2 hours.The solvent was then stirred, the residue was washed with pentane to give the product (0.58 g, 91%) as a solid white: 1H NMR (360 MHz, THF-d8) d 1.24 (d, 12H, J = 6.8 Hz, NCHCH3), 4.54 (m, 2H, NCH), 5.74 (t, 4H, J = 2.4 Hz) 5.83 (t, 4H, J = 2.4 Hz) 13C NMR (100 Hz, THF-d8) d 23.9 (NCHCH3), 25.9 (NCHCH3), 49.3 (NCH), 104.4, 1 1 19 1 1B NMR (1 15 MHz, THF-d8) d 44.6 6D) Diisopropylamidoboranbis (cyclopentadienyl) zirconium dichloride. To a solution of diisopropylamidobis (cyclopentadienyl) borane (0.71 g, 2.95 mmol) in Et 2 O (15 ml) at -78 ° C was added lithium diisopropylamide (6.93 mmoles). The mixture was stirred for 2 hours at room temperature to give a slightly cloudy solution. The solution was then added to a suspension of ZrCl (0.69 g, 2.95 mmol) in Et2O (15 mL) at -78 ° C. The resulting mixture was stirred overnight at room temperature to give a yellowish suspension. The solvent was partially removed and the residue was concentrated and cooled to -78 ° C to give the product (0.50 g, 38%) as colorless crystals. 1 H NMR (400 MHz, CDCl 3) d 1.32 (d, 12 H, J = 7.0 Hz) 2.92 (m, 2 H), 5.65 (t, 4 H, J = 2.4 Hz), 6.80 (t, 4 H, J = 2.4 Hz ). 13 C NMR (100 MHz, CDCl 3) d 24.6, 49.6, 1 1 1.4, 125.7. 13B NMR (1 15 MHz, CDCI3) 537.6. HRMS (El), calculated for C? 6H22BNC? 2Zr: 399.0269, 399.0272 was found.

Example 7 Preparation of meso-diisopropylamidoboranbis (inden-l -yl) zirconium dichloride 7A) Diisopropylamidobis (inden-1-yl) borane. To a solution of diisopropylamidoboron dichloride (Example 3, step A), (1.0 g, 6.0 mmol) in THF (10 mL) at -78 ° C was added dropwise a solution of lithium indenide (1.50 g). 12.3 mmole) in TH F (40 ml) at -78 ° C. The mixture was slowly warmed to room temperature and stirred overnight at room temperature to give a red color solution. After the removal of the solvent, the residue was extracted with CH2Cl2 (3x), filtered and the solvent was removed to give the desired product (2.12 g, 100%) as a white solid: 1 1 B NMR (1 15 MHz, C6D,) d 41 .4 MS (El, m / e (intensity)): 341 (M +, 8), 226 (100). H RMS (El), calculated for C24H28BN C24H28BN: 341 .2315, found: 341 .2310 7B) Meso-diisopropylamidoboranbis (inden-1-yl) zirconium dichloride. To a suspension of the previous product (0.39 g, 1.41 mmol) in Et2O (10 ml) at -78 ° C was added lithium diisopropylamide (prepared in situ from Pr NH (2.62 mmol) and BuLi (2.50 mmol). M, 2.62 mmoles)). The mixture was stirred overnight at room temperature to give an orange suspension. The solvent was removed and the residue was extracted with toluene and filtered. The toluene was then stirred to give an orange solid composed of a mixture of two stereoisomers (rae / meso, about 6: 4). Repeated recrystallization (3x) from toluene at -78 ° C gave the pure meso isomer (0.08 g, 14%) as an orange solid, e.g. F. = 250-254 ° C (decomposition). 1 H NMR (500 MHz, CDCl 3) 1.54 (d, 6H, J = 6.6 Hz), 1.57 (d, 6H, J = 6.8 Hz), 4.27 (m, 2H, NCH), 5.91 (d, 2H, J3.0 Hz), 6.9 (m, 4H), 7.17 (t, 2H, J = 7.6 Hz), 7.31 (d, 2H, J = 8.3, 3.6 Hz), 7.53 (d, 2H, J = 8.6 Hz) . 13C NMR (75 MHz, CDCI3) d 24.7, 25.0 (NCHCH3), 49.7, 100.2 (BC), 1 15.7, 1 17.2, 125.2, 125.3, 125.6, 125.9, 126.5, 131.4. 1 1 B NMR (1 15 MHz, CDCl 3) 839.5. H RMS (El), calculated for C24H26BNC? 2Zr. 499.0582, it was found, 499.0606. MS (El, m / e (intensity)): 501 (M +, 20), 458 (7), 341 (18), 226 (93), 143 (80), 1 15 (99).

Example 8 Preparation of bis (dimethylamide) of rac- diisopropylamidoboranbis (inden-1-iI) zirconium To a mixture of diisopropylamidobis (inden-1 -yl) borane (Example 4, step A)) (1.01 g, 2.96 mmol) and Zr (NMe2) 4 (0.74 g, 0.96 mmol) were added with 15 ml of toluene. The resulting solution was heated to 65 ° C and stirred for 2 hours to give a bright red solution. The product consisted of two isomers with a ratio of 6.7: 1. The solution was filtered, concentrated and cooled to -78 ° C to give the pure isomer rae (0.50 g, 33%) as red crystals. The structure was confirmed through x-ray diffraction analysis in individual crystals developed from toiuene / hexane at -20 ° C. p.f. = 220 ° C (decomposition). 1 H NMR (500 MHz, C6D6) d 1.20 (d, 6H, J = 6.8 Hz), 1.27 (d, 6H, J = 6.6 Hz), 2.61 (s, 12H), 3.86 (n, 2H), 6.04 (d, 2H, J = 2.9 Hz), 6.74 (m, 4H), 7.00 (t, 2H, J = 7.6 Hz ), 7.37 (dd, 2H, J = 8.5, 0.9 Hz, 7.52 (d, 2H, J = 8.5 Hz) 13C NMR (90 MHz, C6D6) 524.6, 24.9, 47.9 (NCH3), 49.6, 105.6, 1 12.4 , 123.1, 123.2, 124.0, 124.2, 126.3, 129.1, 1 1 B NMR (1 15 MHz, C6D6) d 40.8 HRMS (El), calculated for C28H38BN3Zr.517.2206, was found, 517.2217. MS (El, m / e (intensity)): 517 (M +, 20), 471 (45), 429 (100), 330 (24), 226 (70).

Example 9 Rac-diisopropylamidoboranbis dichloride (inden-1-yl) zirconium To a solution of bis (dimethylamide of rac-diisopropylamidoboranbis (inden-1-yl) and zirconium (0.50 g, 0.96 mmoles) in 35 ml of toluene at room temperature, trimethylsilyl chloride (2.0 ml, 15.76 mmol) was added. The solution was stirred for 8 hours at room temperature to give an orange suspension.The solvent was removed, the residue was washed with pentane (2x) to give the desired product (0.40 g, 83%) as an orange powder Individual crystals suitable for the structural analysis of x-rays were developed from mixed solvents of CH2Cl2 and hexane at -20 ° C. pf = 242 ° C (decomposition) .1H NMR (500 MHz, CDCI3) d 1.50 (d, 6H , J = 6.8 Hz), 1.55 (d, 6H, J = 6.6 Hz), 4.24 (heptet, 2H, J = 7.7 Hz), 5.79 (d, 2H, J = 3.0 Hz), 6.80 (dd, 2H, J = 3.2, 0.7 Hz), 7.07 (t, 2H, J = 7.6 Hz), 7.28 (dd, 2H, J = 7.0, 0.7 Hz), 7.38 (t, 2H, J = 8.0 Hz), 7.58, 9d, 2H , J = 8.8 Hz). 13 C NMR (75 MHz, CDCl 3) d 24.7, 25.0, 49.6, 98.4 (BC), 113.1, 114.1, 122.0, 123.0, 125.8, 126.4, 127.2, 131.9. 11 B NMR (1 15 MHz, CDCI3) d 39.2. H RMS (El), calculated for C24H26BNCI2Zr: 499.0582, found 499.0606. MS (El, m / e (intensity)): 501 (M +, 20), 458 (7), 341 (18), 226 (93), 143 (80), 1 15 (99). Anal. Calculated for C24H26BNCI2Zr: C, 57.48; H, 5.19; N, 2.79. It was found: C, 57.46; H, 5.32; N, 2.68.

Example 10 Preparation of rac- (diisopropy! Amidoboran) bis (tetrahydroinden-1-yl) zirconium dichloride A solution of diisopropylamidoboran dichloride bis (inden-1-yl) zirconium (Example 6) (0.16 g, 0.32 mmol) in CH 2 Cl 2 (7 ml) was added to an autoclave reactor containing PtO 2 (0.0105 g). The mixture was refluxed four times with H2 (1.4 MPa), then charged with H2 (10.4 MPa) and stirred for 15 hours at room temperature to give a greenish suspension. 25 ml of CH2Cl2 was added to the mixture, which was then filtered. The solvent was removed under reduced pressure and the residue was washed with pentane (2x) to give diisopropylamidoboranbis dichloride (tetrahydroinden-1-yl) zirconium (0.15 g, 92%) as a slightly greenish solid. 1 H NMR (400 MHz, C6D6) d 1.06 (d, 12 H, J = 6.6 Hz), 1.33 (m, 2 H), 1.47 (m, 2 H), 1.92 (m, 4 H), 2.05 (t, 1 H, J = 4.8 Hz), 2.09 (d, 1H, J = 5.0 Hz), 2.34 (m, 2H), 2.53 (t, 1H, J = 5.3 Hz), 2.56 (t, 1H, J = 5.0 Hz), 3.20 (m , 2H), 3.60 (heptet, 2H, J = 6.6 Hz), 5.01 (d, 2H, J = 2.9 Hz), 6.53 (d, 2H, J = 2.6 Hz). 13C NMR (100 MHz, C6D6) d 23.0, 23.6, 24.4, 24.7, 24.8, 27.0, 49.6, 109.7, 121.6, 124.2, 136.1 11 B NMR (115 MHz, C6D6) d 39.2 ppm. HRMS (El) calculated for C24H3 1 BNCI2Zr 507.1208, 507.1198 was found.

Example 11 Preparation of? 4-1,4-diphenyl-1,3-butadiene from rac-N, N-diisopropylamidoboran-bis-? S- (2-methyl-4-naphthindenyl) zirconium 11 A) Preparation of potassium (2-methyl-2-naphthyl) indenide. 2-Methyl-4-naphthyldene (1.00 g, 3.27 mmol) was dissolved in 20 mL of toluene, potassium bis (trimethylsilyl) amide (1.05 equivalents, 3.43 mmol, 0.684 g) was added and the reaction mixture was stirred at room temperature. environment for 24 hours, during which a yellow solid precipitated. 20 ml of hexane was added and the mixture was stirred for 2 hours. The solid product was isolated by vacuum filtration through a frit of medium porosity. The solid was pumped dry giving 1.10 g, 98%, of the desired product. 11 B) Preparation of N, N-diisopropylamino bis (2-methyl-4-naphthindenyl) borane. To a solution of N, N-diisopropylamino boron dichloride (0.309 g, 1.70 mmol) in 25 ml of THF at room temperature, a solution of 10 ml of THF of (2-methyl-4-naphthyl) was slowly added dropwise. ) indenida of potassium (1.00 g, 3.40 mmoles). The mixture was stirred for 24 hours at room temperature, the solvent was removed and the residue was extracted with toluene (2x25 ml). The combined extracts were filtered through a medium frit and the solvent was removed under reduced pressure to give a light yellow solid (1.0 g, 95%). 11C) Preparation of? 4-1,4, diphenyl-1,3-butadiene of rac-N.N-diisopropylaminoboran-bis-? 5- (2-methyl-4-naphthindenyl) zirconium. N, N-diisopropylamino bis (2-methyl-4-naphthindenyl) borane (0.860 g, 1.38 mmoles) was dissolved in 20 ml of toluene, 2.05 equivalents of potassium bis (trimethylsilyl) amide (0.566 g, 2.84 mmol) were added. and the reaction mixture was stirred at room temperature for 24 hours. The volatile components were removed under reduced pressure and the residue was redissolved in 25 ml of toluene. While stirring at room temperature, (1,4-diphenyl-1,3-butadiene) bis (triethylphosphine) -zirconium dichloride (0.835 g, 1.38 mmol) was added and the solution was stirred for 12 hours at room temperature. The product mixture was filtered through a diatomaceous earth filter aid and the filter solvent was removed under reduced pressure. Further purification was performed through recrystallization from hexane to yield 0.27 g (21%) of the desired product as a dark red solid. 1 H NMR (CSD 6): 57.75-7.00, (mm, 30 H); 4.82 (s, 2H); 3.85-3.95 (m, 2H); 3.62-3.70 (dd, 2H); 1.82-1.9 (dd, 2H) 1.6 (s, 6H); 1.10-1.33 (m, 12H).

Example 12? * - 1, 4-diphenyl-1,3-butadiene of rac-1, 2- bis (dimethylamidodiboran) bis (2-methyl-4-phenylinden-1-yl) zirconium 12A) Preparation of 1,2-bis (2-methyl-4-phenylinden-1-yl) -1,2-bis (dimethylamido) -diborane. Bis (dimethylamido) diboro dichloride (0.500 g, 2.77 mmol) in 10 ml of diethyl ether was added dropwise to a lithium salt solution of 2-methyl-4-phenylindene (1 .407 g, 1.07 mmol). in 50 ml of diethyl ether at 0 ° C. The mixture was stirred overnight at room temperature and the volatiles were removed. The residue was extracted using CH2Cl2. Filtration and removal of CH CI2 resulted in the isolation of a desired product as a pale yellow solid (0.902 g, 62.6% yield). 12B) Preparation of dipotassium salt of 1 -2-Bis (dimethyiamido) -1,2-bis (2-methyl-4-phenylinden) diborane. 1, 2-Bis (dimethylamido) -1,2-bis (2-methyl-4-phenylinden) diborane (0.791 g, 1.52 mmole) and KN (TMS) 2 (0.607 g, 3.04 mmole) in 50 ml were stirred together of toluene overnight. The reaction mixture was refluxed for 1 hour, cooled to room temperature and dried under vacuum. The residue was then slurried in hexane and filtered and the gold-colored crystalline solid was dried under vacuum (0.881 g, 97.1% yield). 12B) Preparation of (trans, trans-1,4-diphenyl-1), 3-butadiene) of rac [1,2-bis (dimethylamido) -1,2-bis (2-methyl-4-phenylinden) diborane] zirconium. The dipotassium salt of 1,2-bis (d-imeti-lamido) -1,2-bis (2-methyl-4-f in I-linden) -diborane, (0.808 g, 1.35 mmol) was slowly added as a solid. to a solution of (1,4-diphenylbutadiene) ZrCl2 (PEt3) 2 (0.819 g, 1.35 mmol) in 75 ml of toluene. This mixture was allowed to stir overnight. After the reaction period the mixture was filtered and the volatiles were removed resulting in the isolation of a deep red residue. The residue was then formed as a slurry in cold hexane, filtered and dried under vacuum resulting in isolation of the desired product as a dark red microcrystalline solid (0.501 g, 45.3% yield). 1 H NMR (C6D6): 5 1 .1 -1.2 (m, 2H), 2.02 (s, 6 H), 2.66 (s, 6 H), 2.90 (s, 6 H), 3.3-3.4 (m, 2 H), 5.28 (s, 2 H), 6.82 (d, 3J HH = 6.6 HZ, 2 H), 6.9-7.3 (m, 14 H), 7.53 (d, 3 JHH = 8.4 Hz, 2 H). 13C NMR (C6D6): 515.10, 42.17, 44.36, 86.78, 93.34, 106.54, 1 19.17, 123.12, 123.39, 123.71, 124.26, 127.88, 128.51, 128.90, 129.34, 135.76, 140.85, 145.80.

Example 13? 4-1, 4-dif-enyl-1,3-butadiene of rac-diisopropylamidoboran-bis-? 5- (methyl-4-phenylinden-1-yl) hafnium Hafnium tetrachloride (0.375 g, 1.17 mmoles) was formed in 40 ml of toluene. To this slurry were added diphenylphosphine (0.346 ml, 2.34 mmol, through a syringe) Li powder (Aldrich, low sodium, 0.081 g, 1.7 mmol) and 1,4-diphenyl-1.3. -butadiene (0.242 g, 1.17 mmoles). The reaction mixture was stirred overnight at room temperature, then filtered using a medium porosity frit and a diatomaceous earth pad to remove the unreacted lithium metal. To the filtrate was added diisopropylamidobis (1 - (2-methyl-4-phenylindenide)) dipotassium borane, K2 [Pr2NB (2-Me-4-Ph-indenide) 2], (0.700 g, 1.17 mmol) , using 10 ml of toluene to help the transfer. The reaction mixture was stirred for 1 hour at room temperature. The toluene was removed under reduced pressure and the reaction product was extracted with hexane (twice) was filtered (medium porosity frit with a diatomaceous earth pad). An additional product was obtained by extracting the salt byproduct using toluene and refiltering a frit of medium porosity and a diatomaceous earth pad. The spectroscopic analysis of 1H NMR indicated that isomer 1 Pr2NB (2-Me-4-Ph-inden-1-yl) 2Hf (1,4-diphenyl-1,3-butadiene) was enormously soluble in hexane and that the isomer undesired meso could be separated through repeated extraction with hexane. The final isolation and purification of 1 Pr2NB (2-Me-4-Ph-inden-1-iI) 2Hf (1,4-diphenyl-1,3-butadiene) was achieved through "soxhlet" extraction using hexane. After the hexane extract became colorless, the sleeve was removed and dried, yielding 0.04Z g of 1Pr2NB (2-Me-4-Ph-inden-1 -yl) 2Hf (1,4-diphenyl-1, 3-butadiene) pure as determined through 1 H and 13 C NMR spectroscopic analysis. 1 H NMR (C6D6): 57.6 (d, 2 H); 7.42-7.00, (m, 18 H); 6.9 (d, 2 H); 6.82 (d, 4 H); 5.57 (s, 2H); 4.03, m, 2H); 3.45-3.57 (dd, 2H); 1.8 (s, 6 H); 1 .28-1 .33 (m, 12 H).

EXAMPLE 14 4-1,4-Diphenyl-1,3-butadiene of rac-d i iso propi the boran-bis-mido. 6- (2-methyl-4-phenylinden-1 -yl) zirconium In a glove box, diisopropylamidobis (2-methyl-4-phenylinden-1-yl) borane (0.125 g, 0.240 mmol) was dissolved in 20 ml of dry THF, and two equivalents of bis (tr) were added dropwise. potassium methylsilyl) amide (solution of 0.500 molar, 0.960 ml, 0.480 mmol) over a period of 10 minutes at room temperature, after which the solution was stirred for 4 hours, the volatile components were removed under reduced pressure and the solids that were subtracted were redissolved in 25 ml of toluene. While stirring at room temperature, 1,4-diphenyl-1,3-butadiene) bis (triethylphosphine) zirconium dichloride (0.145 g, 0.240 mmol) was added and the resulting solution was stirred for 4 hours. The product was recovered by filtering the mixture through diatomaceous earth and removing the filtrate solvent under reduced pressure. Further purification was performed through recrystallization through hexane to produce the product as a dark red solid.

Example 1 Preparation of? 4-1,4-diphenyl-1,3-butadiene from rac. { iPr2NC (NiPr) 2) borane-bis-? 5- (2-methyl-4-phenylindenyl) zirconium 15A) Preparation dichloride of rPr2NC (N¡Pr) 2) boron Diisopropylcarbodiimide (1.178 g, 9.33 mmol) was dissolved in 20 ml of toluene, cooled to 0 ° C and slowly added lithium diisopropylamide (1.00 g) , 9.33 mmole) to the solution over a period of 5 minutes. The solution was allowed to warm to room temperature while stirring for 3 hours. Subsequently, dropwise added over a period of 30 minutes to a solution of 1 molar heptane (0 ° C) of boron trichloride (9.33 ml, 9.33 mmol) was allowed to warm to room temperature overnight. The solution was filtered and the solvents were removed under reduced pressure to yield 2.3 g (97%) of a light yellow oil. 1 H NMR (C6D6): 53.6-3.4 (m, 2H); 3.4-3.25 (septet, 2H); 1.43 (d, 12H); 0.8 (d, 12H). 1 5B) Preparation of bis (2-methyl-4-phenylindenyl). { 'Pr2N C (N, Pr) 2} borano PrzNCIN'Pr Jboro dichloride (0.30 g, 0.97 mmol) was dissolved in 30 ml of THF and potassium (2-methyl-4-phenyl-) indenide (0.476 g, 1.95 mmol) was added. The mixture was stirred for 24 hours at room temperature, followed by heating under reflux for 4 hours. The product mixture was allowed to cool to room temperature and the solvent was removed under reduced pressure. The residue was extracted with toluene (2x50 ml), filtered through a medium frit and the solvent was removed in vacuo to give a light yellow solid (0.533 g, 85%). 15C) Preparation of? -1,4-diphenyl-1,3-butadiene of rac- [1 Pr2NC (N'Pr) 2) borane-bis-? 5- (2-methyl-4-naphthindenyl) zirconium. Bis (2-methyl-4-phenylindenyl) (iPr2NC (NiPr) 2) borane (0.533 g, 0.82 mmol) was dissolved in 20 ml of toluene, 2.0 equivalent of potassium bis (trimethylsilyl) amide (0.0328 g) was added. , 1.65 mmol) and the reaction mixture was stirred at room temperature for 24 hours. The volatile components were removed under reduced pressure, and the residue was washed twice with 25 ml of hexane. The volatile components were removed under reduced pressure to yield 0.382 g (64%) of the orange solid dipotassium salt. A portion of this solid (0.100 g, 0.14 mmole) was dissolved in 15 ml of toluene. While stirring at room temperature, (1,4-diphenyl-1,3-butadiene) bis (triethylphosphine) zirconium dichloride (0.084 g, 0.14 mmol) was added and the solution was stirred for 12 hours at room temperature. The product mixture was filtered through a diatomaceous earth filter aid and the filtrate solvent was removed under reduced pressure to give 0.115 g (88%) of the crude product that existed as a rae / meso mixture. Additional coding was performed through recrystallization through hexanes to yield 0.015 g (12%) of the rae product as a dark red solid. 1 H NMR (C6D6): d 7.6-6.7, (mm, 26 H); 5.55 (s, 2H); 4.05-3.90 (m, 2H); 3.5 (dd, 2H); 2.7-2.4 (m, 2H); 1.78 (s, 6H); 1.55 (dd, 2H); 1.25 (m, 12 H); 0.95 (m, 12H).

Example 16? 4-1,4-diphenyl-1,3-butadiene of rac-dimethylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) zirconium 16A) Preparation of dimethylamidodibromoborane. B (NMe2) 3 was added to BBr3, dropwise. The reaction was immediate and exothermic. This mixture was allowed to stir for 2 hours, during which time the NMR analysis showed that the reaction was essentially quantitative and complete (22,510 g, 99.9% yield). 1 H NMR (C6D6): 52.31 (6H). 13C NMR (C6D6): 541.45. 16B) Preparation of dimethylamido-bis (2-metif-4-phenylindinyl) borane. A solution of dimethylamidodibromoborane (0.51 1 g, 2.38 mmol) in 10 ml of toluene was cooled to 0 ° C and diethyl ether (two equivalents) was added. This mixture was then added dropwise to a lithium salt solution of 2-methyl-4-phenylindene (1.01 1) g, 4.76 mmol) in 50 ml of THF at 0 ° C. This mixture was then allowed to stir overnight at room temperature. After the reaction period, the volatile components were removed and the residue was extracted and filtered using hexane. Removal of hexane resulted in isolation of a yellow oil (1. 103 g, 99.9% yield). 16C) Preparation of dipotassium salt of dimethylamido-bis (2-methyl-4-phenylene) borane. Dimethylamido-bis (2-methyl-4-phenylindenyl) borane (1.010 g, 2.17 mmol) and KN (TMS) 2 (0.866 g, 4.34 mmol) in 50 ml of toluene were stirred overnight. The reaction mixture was refluxed for 1 hour, isolated at room temperature and dried under vacuum. The residue was then formed as a slurry in hexane and filtered and the orange microcrystalline solid was dried under vacuum (1246 g,> 100% yield due to residual solvent still present as observed by NMR). 16D) Preparation of (trans, trans-1,4-diphenyl-1,3-butadiene) of rac- [dimethylamido-bis (2-methyl-4-phenylindene) borane] zirconium. Dimethylamido-bis (2-methyl-4-phenyl-indenyl) borane dipotassium salt (1,246 g) was slowly added., 2.30 mmol) as a solid to a solution of (1,4-diphenylbutadiene) ZrCl2 (PEt3) 2 (1391, 2.30 mmol) in 75 ml of toluene and allowed to stir overnight. After the reaction period, the mixture was filtered and the volatiles were removed resulting in the isolation of a dark residue. The residue was formed as a slurry in hexane and filtered. Red crystals were developed over a period of 2 hours from the hexane filtrate (0.222 g). The solid in the frit was washed through the frit using toluene and a second crop of crystals was developed from that mixture allowing the solution to concentrate slowly over a period of one week through slow evaporation of toluene (0.100 g ). The combination of the crystals obtained resulted in the isolation of the total of 0.322 g (yield 18.4%) of the highly pure product. 1 H NMR (CßDβ): d1 .71 (s, 3H), 1.7-1.8 (m, 2H), 2.89 (s, 3H), 3.4-3.5 (m, 2H), 5.52 (s, 2H), 6.76 (d, 3J HH = 7.2 HZ, 4 H), 6.8-7.4 (m, 12 H), 7.43 (d, 3J HH = 8.4 HZ, 2H). 13C NMR (C6D6): d 15.95, 39.52, 85.43, 90.93, 104.13, 1 17.32, 12.49, 121.65, 122.3 (br), 123.32, 124.19, 124.32, 127.81, 127.83, 128.68, 128.74, 128.81, 136.06, 140.55 , 143.86. MS (EI): m / z 759.2635 (M-H) +, cale. (M-H) + 759.2610.

Example 17 Bis (trimethylsilyl) amido (? - fluoren-9-yl) (? -cyclopentadienyl) borane-zirconium dichloride 17A) Preparation of bistrimethylsilylamido (9-fluorenyl) boron chloride.

N-Butyl lithium (2.5 M hexane, 4.20 mL, 10.50 mmol) was added to a fluorene solution (1.66 g, 10.00 mmol) in 15 mL of TH F at -78 ° C. The resulting mixture was slowly heated and stirred at room temperature for 5 hours to give a red solution. The solution was cooled to -78 ° C and a solution of bis (trimethylsilyl) amidoboro dichloride (TMS) 2NBCI2 (2.42 g, 10.00 mmol) in 25 ml of TH F at -78 ° C was added dropwise to give a light yellow solution. The solution was stirred overnight at room temperature. The volatile components were removed, and the residue was extracted with pentane and filtered. The pentane was stirred to give the desired product (3.70 g, 100% yield) as a white solid. 1 H NMR (400 MHz, CDCl 3): 50.45 (s, 18 H), 4.41 (s, 1 H), 7.34 (dt, 2 H, J = 7.4, 1.1 Hz), 7.42 (t, 2 H, J = 7.3 Hz) , 7.49 (d, 2H, J = 7.6 Hz), 7.87 (d, 2H, J = 7.4 Hz). 13C NMR (100 MHz, CDCI3) 64.6, 121.0, 125.4, 127.2, 127.3, 143.0, 145.9. 1 1 B NMR (1 15.5 MHz, CDCI3) 546.6. 17B) Preparation of bis (trimethylsilyl) amido (9-fluorenyl) - (cyclopentadienyl) borane.

A solution of CpNa / THF (0.24 g, 2.40 mmol) in 15 ml of THF at -78 ° C was added dropwise to a solution of bistrimethylsilylamido chloride (9-fluorenyl) boron (0.89 g, 2.40 mmol) in 15 ml of THF at -78 ° C. The resulting yellow solution was slowly warmed to room temperature with stirring and stirred overnight. The volatile components were removed under reduced pressure and the residue was extracted with pentane and filtered. The pentane solution was concentrated and cooled to -78 ° C to give the desired product (0.57 g, 59%) as a white solid. 1 H NMR (400 MHz, C6D6): 60.20 (s, 18H), 1.71 (t, 2H, J = 1.4 Hz), 4. 33 (s, 1 H), 5.93 (m, 1 H), 6.13 (m, 1 H), 6.69 (dd, 1 H, J = 14, 1.5 Hz), 7.09 (dt, 2H, J = 7.2, 1.5 Hz), 7.19 (dt, 2H, J = 7.4, 1 .7 Hz), 7.46 (dd, 2H, J = 7.4, 1.1 Hz), 7.70 (dd, 2H, J = 7.6, 0.8 Hz). 13C NMR (100 MHz, C6D6) 55.1, 43.4, 120.6, 125.8, 126.7, 127.2, 132.2, 139.5, 142.9, 143.1, 147.4. 11 B NMR (1 15.5 MHz, C6D6) 551 .6. HRMS (El) calculated for C23H29BNSi, (M-CH3), 396.1932; 386.1945 was found. 17C) bis (trimethylsilyl) amidoboran (? -cyclopentadienyl) (? -fluoren-9-yl) zirconium dichloride. A solution of lithium diisopropylamide (prepared in situ from Pr2N H (0.54 ml, 3.84 mmol) and BuLi (2.5 M hexane, 1.61 ml, 4.03 mmoies) in 10 ml of TH F was added to a solution of bis (trimethylsilyl) amido (9-fluorenyl) (cyclopentadienyl) borane (0.77 g, 1.92 mmoles) in 10 ml of TH F at -78 ° C. The resulting mixture was slowly warmed to room temperature and stirred overnight to give a dark red solution.The volatile components were removed to give an orange solid, which was then dissolved in 15 ml of toluene.The toluene solution was added to a suspension of ZrCl4 (0.40 g, 1.9 mmol. ) in 8 ml of toluene at -78 ° C. The mixture was warmed to room temperature and stirred overnight to give a dark red suspension.The volatile components were removed under reduced pressure, and the residue was extracted with toluene. and then it was filtered.The volatile components were removed under reduced pressure. The residue was washed with pentane (3x) to give the product as a red solid. P.f. = 252-254 ° C (decomposition). 1 H NMR (400 MHz, CDCl 3): 50.26 (s, 9 H), 0.50 (s, 9 H), 5.44 (t, 2 H, J = 2.4 Hz), 6.45 (t, 2 H, J = 2.4 Hz), 7.19 (d , 2H, J = 8.4 Hz), 7.31 (t, 2H, J = 7.5 Hz), 7.62 (t, 2H, J = 7.8 Hz), 8.12 (d, 2H, J = 8.4 Hz). 13C NMR (75 MHz, CDCI3) 5 4.8, 5.9, 105.3, 121.4, 122.9, 124.4, 125.4, 125.7, 129.2, 143.0. 11B NMR (115.5 MHz, CDCI3) 5 48.2. HRMS (El) calc'd for C 24 H 3 o BNSÍ 2 Cl 2 Zr: 559.0434; it was found, 559.0443.

Example 18 Diisopropylamidoboran dichloride (α-cyclopentadienyl) (α-fluoren-9-yl) zirconium 18A) Preparation of diisopropylamido (9-fluorenyl) boron chloride. The reaction conditions of Example 17A were substantially repeated, except that diisopropylamido dichloroboron was used in place of bis (trimethylsilyl) amido dichloroboron. At the end of the reaction, the solvent was removed, the residue was extracted with CH 2 Cl 2 and filtered. The volatile components were removed to give the product (0.91 g, 98%) as a yellowish solid. 1 H NMR (400 MHz, CDCl 3): 61.36 (br, 6H), 1.79 (br, 6H), 4.41 (br, 1 H), 7.35 (t, 2H, J = 7.7 Hz), 7.42 (t, 2H, J = 7.5 Hz), 7.50 (br, d, 2H, J = 4.7 Hz), 7.88 (d, 2H, J = 7.3 Hz). 13 C NMR (100 MHz, CDCl 3) 524.5 (br), 43.2 (br), 48.5 (br), 120.2, 124.4, 126.4, 126.9, 141 .1 (br), 146.9. 1 1 B NMR (1 15.5 MHz, CDCI3) 537.2. HRMS (El) calculated for C19H23BNCI, 31.11613. 18B) Diisopropylamido (cyclopentadienyl) (9-fluorenyl) borane. The reaction conditions of example 17B were substantially repeated, except that diisopropylamide (9-fluorenyl) boron was used in place of bis (tpmethylsilyl) amido (9-fluorenyl) boron chloride. The reaction of CpNa / THF (0.96 g, 9.60 mmol) and of diisopropylamido chloride (9-fluorenyl) boron (2.98 g, 10.00 mmol) gave a reaction mixture which was extracted with hexane and filtered. The volatiles were removed to give the product (2.1 1 g, 62%) as a yellow solid. H RMS (El), calculated for C24H28BN, 341 .2315, was found 341.2229. 18C) Preparation of diisopropylamidoboran dichloride (α-cyclopentadienyl) (α-f I uoren-9-yl) zirconium. The reaction conditions of Example 17C) were substantially repeated except that diisopropylamido (9-fluorenyl) boron (1.39 g, 4.08 mmol) was used in place of bis (trimethylsilyl) amido (9-fluorenyl) boron. The crude reaction mixture from this reaction was extracted with toluene and filtered. The solution was concentrated, pentane was added and cooled to -78 ° C to give the product (0.75 g, 36% yield) as a red solid.

P.f. = 280-282 ° C. 1H NMR (500 MHz. C6D6): 51.01 (d, 6H, J = 6.6 Hz), 1.22 (d, 6H, J = 6.9 Hz), 3.67 (pente, 1H, J = 6.6 Hz), 3.80 (pente, 1H , J = 6.6 Hz), 5.30 (t, 2H, J = 2.4 Hz), 6.38 (t, 2H, J = 2.4 Hz), 7.05 (d, 2H, J = 8.1 Hz), 7.12 (t, 2H, J = 7.5 Hz), 7.46 (t, 2H, J = 7.5 Hz), 7.92 (d, 2H, J = 8.5 Hz). 13C NNIR (90 MHz, CDC13) 524.2, 25.4, 49.1, 49.8, 106.9, 122.2, 123.2, 125.4, 125.8, 129.0, 147.9, 157.1. 11B NMR (115.5 MHz, C6D6) 6 39.4. EA, calculated for C24H28BNZrCI2: C, 57.25, H, 5.57, N, 2.78. C, 55.44; H, 5.30; N, 2.62.

Example 19 Bis (bis (trimethylsilyl) amidoboran-bis (? - inden-1-yl) zirconium dimethylamide Bis (trimethylsilyl) amidoborobis (inden-1-yl) was prepared by reacting lithium indenide (0.50 g, 4.10 mmol) and bis (tpmethylsilyl) amidobor dichloride (0.48 g, 2.00) in THF to give the product (0.75 g, 94%) as a yellowish solid. 1 H NMR (400 MHz), C6D6) major isomer): 6 0.32 (s, 18H), 3.64 (s, 2H), 6.08 (dd, 2H, J = 5.5, 1.8 Hz), 6.48 (dd, 2H, J = 5.2 Hz), 6.82 (d, 2H, J = 7.3 Hz), 0.93 (dt, 2H, J = 7.1, 1.2 Hz), 7.20 (m, 4H). 11 B NMR (1 15.5 MHz, C6D6) 556.8. HRMS (El) calculated for C24H32BNSÍ2, 401.2166; it was found, 401.2182. EA, Calculated for C24H32BNSÍ2, C, 71.82; H, 7.98; N, 3.49. C, 70.06; H, 8.06; N, 3.36. The bis (trimethylsilyl) amidoborobis (inden-l -yl) (0.27 g, 0.67 mol) and Zr (NMe2) (0.18 g, 0.67 mmol) were then combined in 10 ml of toluene for 2 hours at 65 ° C to give a red solution. The volatile components were removed under reduced pressure to provide the product as a red foam. 1 H NMR (400 MHz, C6D6): 50.26 (s, 18H), 2.53 (s, 12H), 5.95 (d, 2H, J = 2.9 Hz), 6.64 (d, 2H, J = 2.9 Hz), 6.68 ( t, 2H, J = 7.5 Hz), 6.95 (t, 2H, J = 7.6 Hz), 7.30 (d, 2H, J = 8.5 Hz), 7.45 (d, 2H, J = 8.8 Hz). 13C NMR (100 MHz, C6D6) 5 5.6, 47.9, 105.1, 1 1 1.5, 122.2, 122.9, 124.2, 126.4, 128.5. 1 1 B NMR (1 15.5 MHz, C6D6) d 50.3. HRMS (El) calculated for C28H42BN3Si2Zr, 577.2057; it was found 577.2061 Example 20 Bis (trimethyl) silylamidobis (? - inden-1-yl) boran) zirconium dichloride Bis (trimethylsilyl) amidoboron bis (inden-lyl) (0.35 g, 1.12 mmol) and Zr (NMe2) 4 (0.30 g, 1.12 mmol) were combined in TH F to give an intermediate, which does not it was further purified. Volatile components were removed under reduced pressure and replaced with CH2Cl2 (10 mL). The mixture was stirred with dimethylsilane chloride (1.42 ml, 1.20 mmol) overnight at room temperature. The volatile components were again removed under reduced pressure and the residue was extracted with CH2Cl2 and filtered. The solution was concentrated, formed in layers with pentane and cooled to -78 ° C to give the desired product (0.54 g, 86%) as an orange solid. 1 H NMR (500 MHz, C6D6): 6 0.20 (s, 18H), 5.54 (d, 2H, J = 3.3 Hz), 6.68 (dd, 2H, J = 2.1, 0.9 Hz), 6.85 (t, 2H, J = 7.0 Hz), 7.04 (dd, 2H, J = 8.1, 1 .1 Hz), 7.17 (m, 2H, covered with solvent residue peak), 7.33 (d, 2H, J = 8.4 Hz). 13C NMR (100 MHz, C6D6) d 5.3, 1 12.8, 1 13.0, 123.6, 126.5, 127.1, 127.8, 132.1. 1 1 B NMR (1 15.5 MHz, C6D6) 6 48.5. H RMS (El) calculated for C24H30BNSÍ2CI2Zr, 559.0434; 559.0432 was found.

Example 21 Preparation of? 4-1,4-diphenyl-1,3-butadiene of rac- diisopropylamidoboran-bis-? 5- (2-isopropyl-4-phenylindenyl) zirconium 21 A) 2-isopropyl-4-phenyl indene. Sodium hydride (2. 1 g, 60% dispersion in oil) was placed in a 500 ml flask under a nitrogen atmosphere. Approximately 20 ml of hexane was added to remove the oil, and the mixture was stirred briefly. After stopping the agitation, the NaH was allowed to settle and the liquids were removed through a syringe. This procedure was repeated one more time, then 200 ml of TH F was added to the NaH and the suspension was cooled with an ice bath. Diethyl isopropylmalonate (10.10 g, 50.00 mmol) in 1000 ml of THF was added through an addition funnel for 30 minutes. After the addition of the malonate, the solution was stirred for an additional 40 minutes. A 30 mL solution of THF of 2-phenylbenzyl bromide (12.5 g, 50.5 mmol) was added through an addition funnel and the mixture was stirred overnight. The next morning, 1 00 ml of 1 N ammonium chloride was added. The solution was diluted with 200 ml of ether and the organic layer was washed with brine, dried over Na2SO4 and separated from the solvent under reduced pressure. The orange red oil was used without further purification. The crude acylation product was dissolved in 300 ml of ethanol and 75 ml of water. 20 g of potassium hydroxide were added and the mixture was refluxed overnight. After cooling, the ethanol was removed under reduced pressure. Hexane was added and stirred for one hour to dissolve any unwanted organic materials. The hexane was decanted and water (approximately 150 ml) was added. The solution was made acidic (at a pH of 1) by adding concentrated HCl. The desired carboxylic product was extracted with ether, dried over Na2SO4, and removed under reduced pressure. The NMR spectra of the crude product (10.74 g, 80%) indicated that ester hydrolysis and decarboxylation was completed. The product, which solidified to a tan solid, was used without further purification. 50 ml of thionyl chloride was added to the carboxylic acid and the mixture was stirred overnight at room temperature to dissolve the acid. The excess thionyl chloride was removed under reduced pressure and the remaining acid chloride was dissolved in 75 ml of methylene chloride. This solution was added dropwise through an addition funnel to a suspension of aluminum chloride (5.70 g, 42.5 mmol) in 25 ml of methylene chloride and cooled with an ice bath. The reaction was allowed to warm slowly to room temperature and stirred overnight. The solution was emptied on ice (approximately 100 ml) and stirred vigorously for 1 hour. The organic layer was separated, the aqueous layer was washed once with ether and the combined organic layers were washed with brine, dried over Na2SO4 and separated under reduced pressure. The crude 2-isopropii-4-phenylimdanone (10.0 g) as an orange-brown oil was used without further purification. 2-Isopropyl-4-phenylindanone (12.1 g, 48 mmol) was stirred in a mixture of TH F and methanol (100 ml.; 2/1) while adding sodium borohydride (1.5 g, 40 mmol) in small portions for 30 minutes. After stirring overnight, about 50 ml of ice was added and the mixture was stirred for 0.5 hour. The THF and MeOH were removed under reduced pressure. Approximately 250 ml of ether was added, the pH was adjusted to a pH of 1 through the addition of aqueous HCl and the ether layer was separated. The ether was washed with a saturated sodium bicarbonate solution, then brine, dried over Na2SO4 and evaporated under reduced pressure. The mixture of isomer and alcohol (11.0 g, 43.5 mmol, 90%) was obtained as a tan waxy solid. This was used without purification. The crude mixture of isomeric alcohols was dissolved in 150 ml of toluene to which 0.5 g of p-toluenesulfonic acid was added. The solution was refluxed in a matras equipped with a Dean-Stark trap for 1.5 hours, and then cooled. Solid sodium bicarbonate was added and the mixture was stored overnight in a refrigerator. The next morning, 100 ml of water was added and the organic layer was separated, dried over Na2SO4 and separated under reduced pressure. The product, 2-isopropyl-4-phenylindene (10.4 g) was obtained as a brown oil. Analysis through GC indicated a purity of area of > 96%. This material was stored cold under an inert atmosphere until it was ready for further conversion. H NMR (CDCl 3) 6 1 .18 (d, 6H), 2.74 (septet, 1 H), 3.39 (s, 2H), 6.53 (s, 1 H), 7.09-7.55 (m, 8H). 21B) lithium 2-isopropyl-4-phenyl-indenide. To a solution of 25 ml of toluene of 2-isopropyl-4-phenylinden (3:34 g, 14.25 mmol), in a glove box filled with argon, n-butyl lithium (5,500 ml, 13.75 mmol) was added. The mixture was stirred at room temperature overnight. The toluene was removed under reduced pressure. 20 ml of hexane were added and removed under reduced pressure, and then 50 ml more were added. The mixture was stirred for 1 hour, then filtered, washed with approximately 15 ml of hexane and the filtrate was dried under vacuum. The lithium indenide product (3.0 g) was obtained as an orange-brown powder. This material was stored in a glove box until it was needed. 1 H NMR (d6-THF): 51-27 (d, 6H), 3.02 (septet, 1H), 5.84 (s, 1H), 6.06 (s, 1H), 6.42-6.51 (m, 2H), 7.15 (t , 1H), 7.18 (d, 1H), 7.26 (t, 2H), 7.82 (d, 2H). 13 C NMR (d8-THF): ppm 147.00, 141.54, 130.59, 130.40, 129.20, 128.16, 126.70, 125.02, 118.68, 113.92, 113.40, 91.01, 89.77, 30.62, 25.78. 21C) N, N-diisopropylamido bis (2-isopropyl-4-pheni I indenyl) borane. To a solution of 25 ml of N, N-diisopropylamidoboron dichloride toluene (0.501 g, 2.75 mmol) at room temperature was added portionwise, potassium (2-isopropyl-4-phenyl) indenide (1.50 g, 5-51). mmoles in 20 ml of toluene). The mixture was heated to reflux and filtered for 6 hours. The solution was cooled to room temperature, filtered through a medium frit and the solvent was removed under reduced pressure to give a light yellow solid (1.57 g, 99%). This material was further purified through column chromatography (silica gel / hexane) to yield 0.6 g (38%) of a light yellow solid (96% pure through GC). 21 D)? 4-1,4-diphenyl-1,3-butadiene of rac-diisopropylamidoboran-bis-? D- (2-isopropyl-4-phenyleindenyl) zirconium. In a glove box, N was dissolved. N-diisopropylamino bis (2-isopropyl-4-phenylindenyl) borane (0.3380 g, 0.660 mmol) in 20 ml of toluene, 2.1 equivalents of potassium bis (trimethylsilyl) amide (0.276, 1.3 mmoles) were added and The resulting mixture was stirred at room temperature for 24 hours. The volatiles were removed under reduced pressure and washed. The resulting orange solid was combined in 10 mL of hexane, filtered and pumped dry. The dipotassium salt residue (0.475 g, 97%, 0.635 mmol) was redissolved in 20 ml of toluene, and (1,4-diphenyl-1,3-butadiene) bis (triethylphosphine) zirconium dichloride ( 0.384 g, 0.635 mmol). The solution was stirred for 2 hours at room temperature, followed by heating at 80 ° C for 6 hours. The product mixture was cooled to room temperature, filtered through diatomaceous earth and the filtrate solvent was removed under reduced pressure. Further purification was performed by recrystallization from hexane to yield 0.21 g (36%) of the product as a dark red solid. 1 H N M R (C6D6): d 7.62 (d, 2 H); 7.42-6.7, (mm, 24 H); 5.79 (s, 2H); 4.5, septet, 2H) 3.45-3.57 (dd, 2H); 2.8-2.9 (septet, 2H) 1.65-1.72 (dd, 2H); 1.35 (d, 12H); 1.2-1.3 (m, 12H).

Example 22? 4-1, 4-diphenyl-1,3-butadiene of rac-diisopropylamidoboran-bis-? 5- (2-methyl-4-phenylinden-1-yl) supported zirconium In a glass flask, 0.922 ml of a solution of toluene of hydrofenyltris (pentafluorophenyl) borate methyldi (octyl) ammonium (representing 0.70 mmoles based on boron) and 0.110 ml of a solution of toluene 1.9 M were added. triethylaluminum (0.058 mmole) together with 0.290 ml of additional toluene. The mixture was stirred for 5 minutes on a mechanical stirrer. About half 0.550 ml) of the resulting solution was added to a flask containing 0.500 g of thoroughly dried silica (silica Grace-Davison 948, heated at 250 ° C, 4 hours). The mixture was stirred manually to break the cakes and then mechanically stirred for a further 10 minutes. Then, 8 ml of mixed hexanes were added to form a slurry, which was stirred mechanically for 15 more minutes. To this mixture, 3.5 ml of a 0.005 M toluene solution of rac-diisopropylamidoborane-bis-? 5- (2-methyl-4-phenylinden-1) 4-1,4-diphenii-1,3-butadiene was added. -yl) zirconium (Example 14). The mixture was stirred for 2 hours on a mechanical stirrer, filtered on a glass frit, washed 3 times with 10 ml of mixed hexanes and dried under reduced pressure. The resulting, dry, blue colored supported catalyst was analyzed through neutron activation for the zirconium content and found to contain 31.8 μmol of zirconium / g formulated as a support catalyst.

Polyethylene Polymerization in Solution Mixed hexanes and 1-octene were purified by spraying with pure nitrogen followed by passage through columns containing alumina (A-2, available from LaRoche I nc.), And reagent Q5 (available from Englehard Chemical Inc .) at 3.51 5 kg / cm2g, using a pad of purified nitrogen. All solvent transfers and solutions described below were achieved using a purified, dry nitrogen or argon gas pad. The gas feeds to the reactor were purified through the passage through columns of A-204 alumina (available from LaRoche) and the reagent Q5. The aluminas were previously activated through the treatment at 375 ° C with nitrogen and the reagent Q5 was activated through the treatment at 200 ° C with 5% hydrogen in nitrogen. Intermittent reactor polymerizations were conducted in a 2 liter Parr reactor equipped with an electric heating jacket, an internal coil coil for cooling and a lower drain valve. The pressures, temperatures and valves of the block were verified and controlled by a computer. A solvent of mixed alkanes (approximately 740 g) and 1 -8 octene (1 18 g) were metered into a solvent tripping tank equipped with a differential pressure transducer or load cell. These liquids were then added to the reactor from the solvent firing tank. The contents of the reactor were stirred at 1200 rpm. Hydrogen was added through differential expansion (170 kPa) from a shot tank of 75 ml at 2.1 Mpa. The contents of the reactor were then heated to the desired operating temperature under 3.4 MPa of ethylene pressure. The catalyst composition (as a 0.0050 m solution in toluene) and the cocatalyst were combined in the desired ratio in the glove box and transferred from the glove box to the catalyst shot tank through a 0.16 cm pipe using toluene to help the transfer. The catalyst tank was then pressurized to 4.8 MPa using nitrogen. After the contents of the reactor were stabilized at the desired operating temperature of 140 ° C, the catalyst was injected into the reactor through a drop tube. The tube was maintained to allow cold ethylene glycol to pass through the internal cooling coils. The reaction was allowed to proceed for 15 minutes with ethylene provided according to the demand. As indicated, additional injections of the catalyst composition prepared and injected in the same manner were employed. The contents of the reactor were then expelled to a 4 liter nitrogen purged vessel and quenched with isopropyl alcohol. Approximately 10 ml of a toluene solution containing about 67 mg of a hindered phenol antioxidant (Irganox ™ 1010 from Ciba Geigy Corporation) and 133 mg of a phosphorus stabilizer (Irgafos ™ 168 from Ciba Geigy Corporation) were added. The volatiles were removed from the polymers in a vacuum oven that was gradually heated to 140 ° C overnight and cooled to at least 50 ° C before the kiln was removed. washed with 1200 ml of mixed hexanes as solvent at 150 ° C before re-use, the results are contained in Table 1.

TABLE 1 Operation CatalystCocatalyst - Catalyst / T Rendi- Density * MMI ** Cocatalyst (° C) meters (g) g / ml (dg / min) (μmmoles) 1 Ex.2 MATB 5/5 140 31.5 0.892 436 2 26.7 0.901 186 3 MABU¿ 18.3 0.891 199 4 TPBJ 5.3 0.892 500+ 5 TPA4 5/20 10.2 0.896 500+ 6 Ex.3 MATB '5/5 17.1 0.902 33 7 6.3 0.908 500+ 8 MABU' 0.3 TPBJ 4.5 10 TPA4 5/20 0.7 11 Ex.17 MAOD 1/1000 142.1 2.8 12 0.75 / 750 133.4 1.9 13 Ex.18 1 / 1000 120.8 0.90 1.8 14 0.5 / 500 120.6 1.1 15 Ex.20 164.9 * the density was determined through a displacement technique using methyl ethyl ketone. ** the microfusion index technique, calibrated using known melt index standards. 1- tetracyl (pentafluorophenyl) borate of methyldi (octadecyl) ammonium this ammonium cation is derived from a mixture of commercially available amines such as methylbisceboamine. 2 bis (tris (pentafluorophenyl) aluminano) undecyl imidazolide methyIbis (octadecyl) ammonium (prepared according to the patent of E. U. A. 09/251, 664, filed on February 17, 1999). 3- tris (pentafluorophenyl) borane (C6F5) 3B. 4- tris (pentafluorophenyl) aluminan (CßF5) 3AI. 5. methylalumoxane available from Albemarle Corp.

Polymerization of Polypropylene in Solution The above reaction conditions were substantially repeated, except that 625 g of mixed alkenes were used as solvent and either 150 g of propylene (P) for the homopolymer formation, or a mixture of 150 g of propylene and 7 g of ethylene (C) for the copolymer formation. Hydrogen was added as a molecular weight control agent through differential pressure expansion from a 75 ml addition tank at approximately 120-170 kPa. The reactor was heated to the polymerization temperature and the desired metal complex together with a cocatalyst, as solutions diluted in toluene, were mixed at an appropriate molar ratio, transferred to a catalyst addition tank and injected into the reactor ( three injections of 1 μmoles, 3 μmoles and 5 μmoles based on zirconium for approximately 30 minutes for operation 16, two injections of 5 μmoles based on zirconium for approximately 20 minutes for operation 17 and an individual addition for all other operations The results are presented in Table 2.

TABLE 2 CataliCocataliCatalized / MonTT Operation Time RendiTm Mw zadorador Cocatalizador mere CO (min.) Ment (° C) X103 (μmoles) (g) 16 Ex. 1 MAO1 9/9000 P 70 51 9.2 155.6 - 17 Ej-1 10 / 10,000 EP «58 10.3 145.9 - 18 Ex. 5 MDAP2 1 / 1.25 P 7 43.5 155.8 - 19 Ex. 5 MABU3 0.25 / 0.25« '29.8 155.7 357 Ex. 13 «« 30 33.5 157.3 330 21 Ex. 5 0.5 / 0.5 * 85 5 42.2 152.2 195 22 Ex. 13 - 0.75 / 0.75 • - - 41.3 153.9 183 23 Ex. 5 0.5 / 0.5 100 «. 12.4 151.4 136 24 Ex. 13 0.75 / 0.75 «- 16.2 150.3 117 Ex. 5 • 1.5 / 1.5 115 12 19.8 146.7 75 26 Ex. 13 1.75 / 1.75 -. 10 19.4 147.4 69 27 Ex. 5 2.5 / 25 - 130 11 12.7 143.2 48 28 Ex. 13 3.75 / 3.75 «« 17 16.2 142.0 15 29 Ex. 17 MAO 6/6000 «70 118.9 117 114 Ex. 18 «« «- 107.9 112 111 31 Ex. 20 «126.6 108 - 32 Ex. 16 MABU 0.75 / 0.75« 90 15 96.4 152.7 - 1 methylalumoxane available from Albermarle Corp. 2 tris (pentaf! Uorophenyl) (p- (diethylaluminoxyphenyl) borate methyldi (octadecyl) ammonium (formed through the reaction of triethylaluminum and tri (pentafluorophenyl) (hydroxyphenyl) borate methyldi (octadecyl) ammonium). 3 'bis ( tris (pentafluorofeni l) alumi nano) und eci li midazol ida metilbis (octadecíl) amon io.

Slurry Polymerization The previous reaction conditions were substantially repeated except that a supported catalyst was used, the temperature was between 20 ° C and 60 ° C, and no solvent was used. All feeds were passed through alumina columns and a decontaminant (Q-5® catalyst available from Englehardt Chemicals Inc.) before introduction to the reactor. The catalyst and cocatalysts were handled in a glove box containing an argon or hydrogen atmosphere. A stirred 2.0-liter reactor was charged with approximately 500 g of propylene. Hydrogen was added through differential pressure expansion from a 75 ml addition tank at 280 kPa. The reactor was adjusted to the initial polymerization temperature 25 ° C and a slurry of the supported catalyst composition (40 μg, 127 μmol Zr) in mixed hexane was injected into the reactor. The temperature was maintained at 25 ° C for 20 minutes, then increased to 60 ° C for 6.5 minutes (2.8 minutes for operation 33) was maintained at 60 ° C for a total operating time of 40 minutes. After completion, the contents of the reactor were removed and approximately 10 ml in a toluene solution containing about 67 mg of a hindered phenol antioxidant (Irganox ™ 1010 from Ciba Geigy Corporation) and 133 mg of a phosphorus stabilizer (Irgafos ™ 168 from Ciba Geigy Corporation), were added. The polymer was recovered by drying in a vacuum oven set at 140 ° C for about 20 hours. The results are presented in Table 3.

TABLE 3 Operation Catalyst Zr Performance Tm Mw Mw / Mn (mg) (μmoles) (9) (° C) X 10J 32 Ex. 22 (40) 1.27 61.1 150 283 3.0 33 Ex. 22 (32 1.02 47.4 -

Claims

CLAIMS 1 .- A transition metal complex of Group 4 that corresponds to the following formulas: Formula 1 or Formula 2 or a dimer thereof, wherein: M is titanium, zirconium or hafnium in the oxidation state +4, +3 or +2; Y1 and Y2 are independently a group linked to p, cyclic or non-cyclic, anionic, N R1, PR1; N R1. or PR12; Z is boron or aluminum; Q is a neutral, anionic or dianionic ligand group depending on the oxidation state of M; j is 1, 2 or 3 depending on the oxidation state of M and the electronic nature of Q; T independently of each occurrence is: R1 is independently of each occurrence hydrogen, a hydrocarbyl group, a tri (hydrocarbyl) silyl group, or a tri (hydrocarbyl) silylhydrocarbyl group, said R1 groups containing up to 20 carbon atoms not counting hydrogen; R5 is R1 or N (R1) 2; and two groups R1 together or one or more groups R1 together with R5 may optionally be joined to form a ring structure.
2. A metal complex according to claim 1, corresponding to formula 1 and represented by formulas 4, 5, 6, 7, 8 and 9: Formula 7 Formula 8 Formula 9 where M, Z, T, Q and j are as previously defined; R2 is hydrogen, or a hydrocarbyl, haiohydrocarbyl, dihydrocarbylamino-hydrocarbyl, tri (hydrocarbylsilyl) hydrocarbyl group, If (R3) 3, N (R3), or OR3, of up to 20 carbon atoms or silicon, and optionally two adjacent R2 groups may be joined together, thereby forming a fused ring structure; and R3 is independently hydrogen, a hydrocarbyl group, a trihydrocarbylsilyl group or a trihydrocarbylsilylhydrocarbyl group, R3 having up to 20 atoms not counting hydrogen.
3. A metal complex according to claim 2, wherein M is in the oxidation state +4, j = 2 and Q independently of each occurrence is halide, hydride, hydrocarbyl, silylhydrocarbyl, hydrocarbyl oxide, dihydrocarbylamide, said group Q having up to 20 carbon atoms without counting hydrogen, or two Q groups together form an alkanediyl group or a diene ligand of 4 to 40 carbon atoms conjugated, which together with M form metallocyclopentene.
4. A metal complex according to claim 2, wherein M is in the oxidation state +3, j = 1 and Q is either 1) a monovalent anion stabilizing ligand selected from the group consisting of alkyl groups , cycloalkyl, aryl, silyl, amido, phosphide, alkoxy, aryloxy, sulfide, and mixtures thereof, Q further being substituted with a substituent containing amine, phosphine, ether or thioether capable of forming a coordinate covalent bond or chelating link with M, said ligand having up to 50 atoms without counting hydrogen; or 2) a hydrocarbyl group of 3 to 10 carbon atoms comprising an ethylenic unsaturation capable of forming a β3 bond with M.
5. A metal complex according to claim 2, wherein M is in the state of oxidation +2, j = 1 and Q is a neutral conjugated diene, optionally substituted with one or more tri (hydrocarbyl) silyl or tri (hydrocarbylsilyl) hydrocarbyl groups, Q having up to 40 carbon atoms and forming a p complex with M.
A metal complex according to claim 3, corresponding to formulas 4a, 5a, 6a, 7a, 8a or 9a, wherein the definitions of M, Z, R1, R2, and R3 are as defined in Claim 3: Formula 4a Formula 5a Formula 6a Formula 7a Formula 8a. or Formula 9a and Q, independently of each occurrence is halide, hydrocarbyl, hydrocarbyloxy or dihydrocarbylamine of up to 10 carbon atoms which do not represent hydrogen, or two Q groups together form a diene ligand of 4 to 20 carbon atoms which together with M forms a metallocyclopentene.
7. A metal complex according to claim 4, corresponding to formulas 4b, 5b, 6b, 7b, 8b or 9b, wherein the definitions of M, Z, R1, R2, and R3 are as presented in claim 4: Formula 4b Formula 5b Formula 6b Formula 7b Formula 8b, 0 Formula 9b and Q, in each occurrence is a monovalent anion stabilizing ligand selected from the group consisting of alkyl, cycloalkyl, aryl and silyl groups, which are further substituted with one or more amine, phosphine or ether substituents capable of forming a covalent coordinate bond or chelator link with M, Q having up to 30 atoms that are not hydrogen; Q is a hydrocarbyl group of 3 to 10 carbon atoms comprising an ethylenic unsaturation capable of forming a β3 bond with M.
8. A metal complex according to claim 5, corresponding to the formulas 4c, 5c, 6c, 7c, 8c or 9c, wherein the definitions of M, Z, R1, R2, and R3 are as represented in claim 5: Formula 4c Formula 5c Formula 6c Formula 7c Formula 8c Formula 9c and Q, in each occurrence is a neutral conjugated diene, optionally substituted with one or more tri (hydrocarbyl) silyl groups or tri (hydrocarbyl) siiilhydrocarbyl groups, Q having up to 30 carbon atoms that do not represent hydrogen and forming a p complex with M
9. A metal complex according to claim 6, 7 or 8, wherein Z is boron.
10. - A metal complex according to claim 6 or 8, wherein Z is boron and in the formulas 4a, 4c, 7a or 7c, M is zirconium or hafnium, and R 'is methyl or isopropyl. 1.
A metal complex according to claim 1, which is dimethylaminoboranbis (5-cyclopentadienyl) zirconium dichloride, dimethylaminoboranbis (5-inden-1-yl) zirconium dichloride, dimethylaminoboran dichloride. bis (? 5-2-methyl-4-phenylidene-1-yl) zirconium, dimethylaminoboran-bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium dichloride, dimethylaminoboran-bis dichloride (? 5 -2-isopropyl-4-phenylinden-1-yl) zirconium, dimethylaminoboran-bis (? 5-2-methyl-4-bis (3,5-trimethyl) phenylinden-1-yl) zirconium dichloride, dimethylaminoboran dichloride bis (? 5-3-t-butylnide-1-l) zirconium, diisopropylamidoboran-bis (? 5-cyclopentadienyl) zirconium dichloride, diisopropylamidoboran-bis (? 5-inden-1-yl) zirconium dichloride, diisopropylamidoboran-bis (? 5-2-methyl-4-phenyl-inden-1-yl) zirconium dichloride, diisopropylamidoboran-bi-dichloride (? 5-2-ethyl-4-f-enyl-1-yl) zirconium, diisopropylamidoboran-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium dichloride, diisopropylamidobora dichloride n-bis (? 5-2-m eti l-4-bis (3, 5-trif I gold methylf in i linden- 1 -yl) zirconium, diisopropylamidoboran-bis dichloride (? 5-3-butylinden- 1 - il) zirconium, diphenylamidoboran-bis dichloride (? -cyclopentadienyl) zirconium, diphenylamidoboran-bis (? 5-inden-1-yl) zirconium dichloride, diphenylamidoboran-bis (? 5-2-methyl-4-phenylinden-1-yl) zirconium dichloride, diphenylamidoboran-dichloride bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium, diphenylamidoborap-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium dichloride, diphenylamidoboran-bis (d?) Dichloride 2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium, diphenylamidoboran-bis (? D-3-t-butylinden-1-yl) zirconium dichloride, 1,4-difyl enyl- 1,3-butadiene of dimethylamidoboran-bis (? D-cyclopentadienyl) zirconium, 1,4-difen-1, 3-butadiene of dimethylamidoboran-bis (? 5-inden-1-yl) zirconium, 1, 4 -diphenyl-1,3-butadiene dimethylamidoboran-bis (? 5-2-methyl-4-phenyl-inden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene di-di-lam-idoboran-bis (? -2-ethyl-4-f-enyl-inden-1-yl) zirconium, 1,4-difen I-1, 3-butadiene of dimethylamidoboran-bis (? D-2-isopropyl-4-phenyl-inden-1-yl) ) zirconium, 1,4-diphenyl-1,3-butadiene dimethylamidoboran bis (? 5-2-methyl-4-bis (3,5-trifluoromethyl) phenyl-inden-1-yl) zirconium, 1,4-diflu enyl-1,3-buta-diene from d-methyl to midoboran-bis (? 5-3- t-butylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis (? 5-cyclopentadienyl) zirconium, 1,4-diphenyl-1,3-butadiene of diisopropylamidoboran-bis (? 5-inden-1-yl) zirconium, 1, 4-d ifen i 1-1, 3-butadiene diisopropylamidoboran-bis (? 5-2-methyl-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene diisopropylamidoboran- bis (? 5-2-eti l-4-f in I-linden-1-yl) zirconium, 1,4-d ifen-1, 3-butadiene of diisopropylamidoboran-bis (? 5-2-isopropyl-4-) f in ¡linden- 1 -il) zirconium, 1, 4-diphenyl-1,4-butadiene di-sopropi lamido boran-bis (? 5-2-methyl-4-bis (3,5-trifluoromethyl) -phenylinden-1-yl) zirconium, 1, 4-dif in il-1, 3-butadiene of diisopropylamidoboran-bis (? 5-3-t-butylinden-1-yl) zirconium, 1,4-diphenyl-, 3-butadiene of diphenylamidoboran-bis (? 5- cyclopentadienil) ) zirconium, 1,4-diphenyl-1,3-butadiene of diphenylamidoboran-bis (? 5-inden-1-yl) zirconium, 1,4-difayne 1-1, 3-butadiene of diphenylamidoboran-bis (? 5 -2-methyl-4-phenylinden-1-yl) zirconium. 1,4-diphenyl-1,3-butadiene of diphenylamidoboran-bis (? 5-2-ethyl-4-phenylinden-1-yl) zirconium, 1,4-diphenyl-1,3-butadiene of diphenylamidoboran-bis (? 5-2-isopropyl-4-phenylinden-1-yl) zirconium, 1,4-d ifen i I-1,3-butadiene of dif in ilamidoboran-bis (? D-2-methyl-4-bis (3, 5-trifluoromethyl) phenylinden-1-yl) zirconium, or 1,4-diphenii-1,3-butadiene diphenylamidoboran-bis (? 5-3-t-butylinden-1-yl) zirconium.
12. An olefin polymerization process comprising contacting one or more olefin monomers under polymerization conditions with a catalyst composition comprising a metal complex according to claim 1.
13. - The process according to claim 12, wherein the catalyst composition further comprises one or more activating cocatalysts.
14. The process according to claim 12, conducted under solution, slurry or high pressure polymerization conditions.
15. The process according to claim 13, conducted under slurry polymerization conditions, wherein the catalyst further comprises a particulate support, inert.