CN103951687B - Ortho position Tetramethyl melon ring rare earth adduct and synthetic method and application - Google Patents
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- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 76
- -1 Tetramethyl melon ring rare earth Chemical class 0.000 title abstract description 33
- 238000010189 synthetic method Methods 0.000 title abstract description 14
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 46
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical group N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 claims abstract description 39
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 22
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 11
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 11
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 10
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 10
- 229910052688 Gadolinium Inorganic materials 0.000 claims abstract description 9
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 9
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 5
- 241000219112 Cucumis Species 0.000 abstract description 24
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 abstract description 24
- 229920000642 polymer Polymers 0.000 abstract description 16
- 239000007864 aqueous solution Substances 0.000 abstract description 14
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000007935 neutral effect Effects 0.000 abstract description 4
- 229910002651 NO3 Inorganic materials 0.000 description 19
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 19
- 239000013078 crystal Substances 0.000 description 12
- 238000001338 self-assembly Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 229910052747 lanthanoid Inorganic materials 0.000 description 7
- 150000002602 lanthanoids Chemical class 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 229910052691 Erbium Inorganic materials 0.000 description 5
- 229910052689 Holmium Inorganic materials 0.000 description 5
- 229910052692 Dysprosium Inorganic materials 0.000 description 4
- 229910052765 Lutetium Inorganic materials 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 229910052775 Thulium Inorganic materials 0.000 description 4
- 229910052769 Ytterbium Inorganic materials 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 150000005838 radical anions Chemical class 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052771 Terbium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- CGRDBGCYRPGACR-UHFFFAOYSA-J Cl[Cd](Cl)(Cl)Cl Chemical compound Cl[Cd](Cl)(Cl)Cl CGRDBGCYRPGACR-UHFFFAOYSA-J 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 241001597008 Nomeidae Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- YKYOUMDCQGMQQO-UHFFFAOYSA-L cadmium dichloride Chemical compound Cl[Cd]Cl YKYOUMDCQGMQQO-UHFFFAOYSA-L 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229910009112 xH2O Inorganic materials 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- XIEPJMXMMWZAAV-UHFFFAOYSA-N cadmium nitrate Inorganic materials [Cd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XIEPJMXMMWZAAV-UHFFFAOYSA-N 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- MSBXTPRURXJCPF-DQWIULQBSA-N cucurbit[6]uril Chemical compound N1([C@@H]2[C@@H]3N(C1=O)CN1[C@@H]4[C@@H]5N(C1=O)CN1[C@@H]6[C@@H]7N(C1=O)CN1[C@@H]8[C@@H]9N(C1=O)CN([C@H]1N(C%10=O)CN9C(=O)N8CN7C(=O)N6CN5C(=O)N4CN3C(=O)N2C2)C3=O)CN4C(=O)N5[C@@H]6[C@H]4N2C(=O)N6CN%10[C@H]1N3C5 MSBXTPRURXJCPF-DQWIULQBSA-N 0.000 description 1
- KBQHZAAAGSGFKK-UHFFFAOYSA-N dysprosium atom Chemical compound [Dy] KBQHZAAAGSGFKK-UHFFFAOYSA-N 0.000 description 1
- 238000001941 electron spectroscopy Methods 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013110 organic ligand Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- NMHMNPHRMNGLLB-UHFFFAOYSA-N phloretic acid Chemical compound OC(=O)CCC1=CC=C(O)C=C1 NMHMNPHRMNGLLB-UHFFFAOYSA-N 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000012217 radiopharmaceutical Substances 0.000 description 1
- 229940121896 radiopharmaceutical Drugs 0.000 description 1
- 230000002799 radiopharmaceutical effect Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Ortho position Tetramethyl melon ring rare earth adduct of the present invention and synthetic method and application, belong to metal organic supermolecular polymer and its synthetic method field, ortho position Tetramethyl melon ring forms ortho position Tetramethyl melon ring heavy rare earth polymer adduct with rare earth metal in neutral environment, and ortho position Tetramethyl melon ring does not produce adduct with light rare earth metal La, Ce, Pr, Nd, Sm, Eu, Gd, in the aqueous solution of a certain amount of Heavy rare earth, ortho position Tetramethyl melon ring is addedoTMeQ [6] aqueous solution, ortho position Tetramethyl melon ring and heavy rare earth metal ion form polymer in aqueous.And in light rare earth ion La3+、Ce3+、Pr3+、Nd3+、Sm3+、Eu3+、Gd3+The aqueous solution in, add ortho position Tetramethyl melon ringoTMeQ [6] aqueous solution, produced without polymer.Due to this obvious nature difference, the separation available for weight rare earth ion.
Description
Technical field
The present invention is belonged to using the method for synthesizing ortho position Tetramethyl melon ring-rare earth adduct and its separation weight rare earth
Metal-organic supermolecular polymer and its synthetic method field.It is exactly specifically ortho position Tetramethyl melon ring and heavy rare earth
Adduct is formed, but can not be with light rare earth（La、Ce、Pr、Nd、Sm、Eu、Gd）Adduct is formed, and can be formed and added using it
The property of compound and separate weight rare earth.
Background technology
Lanthanide series typically exhibits out similar chemical property and originates from lanthanide contract, and most parts are combined with serial rare-earth
The complex structure of formation, property are very much like, and particularly high ligancy and Yi Jiao is presented in lanthanide metal ion in aqueous medium
Characteristic is changed, the problem of causing lanthanide series and its complex to all suffer from being difficult to separating-purifying.On the other hand, different lanthanide series
The property of respective uniqueness is showed again, as lanthanum and its alloy have hydrogen storage and catalysis；Nd and samarium then show uniqueness
Magnetic property；And europium is then received much concern with its abundant spectral quality；The giant magnetostrictive of terbium and dysprosium can be used as micro-actuator
Main material；And the heavy lanthanide such as holmium, erbium rare earth can show Solid State Laser function and them is can be used for nuclear magnetic resonance
Relaxation reagent in technology, biology fluorescence probe, DNA cutting catalyst.Recent studies have shown that rare earth element can be additionally used in
Radiopharmaceuticals are with treating cancer etc..Therefore, using lanthanide series as leading rare earth communication information, oil catalysis, colored display,
Hydrogen storage material and superconductor etc. play the role that can not be substituted, and have the title of industrial " vitamin ", and by U.S., day etc.
State is classified as " the strategic element " of 21 century.
Since being determined from the structure of the hexa-atomic melon ring of first member of its family in 1981 (Cucurbituril, Q [6]),
Melon ring (Cucurbit [n]urils, Q[n] s) family be to have a growing family, associated melon ring chemical research also achieves
The progress to attract people's attention.From the point of view of melon ring structure, melon ring (Cucurbit [n] urils, Q [n]) be one kind by n glycosides urea unit
The big ring cage compound linked up with 2n methylene bridge.Because two ports " inlaying " of melon ring a circle carbonylic oxygen atom,
With the ability that complex is formed with metallic ion coordination, it is used as organic ligand in recent years, in metal-organic supermolecular polymerization
Received more and more attention in the research field that thing is constructed.In recent years, we interact in research melon ring and serial rare-earth
And its found in the research of Supramolecular self assembly, different melon rings can have different coordination situations from serial rare-earth effect, be formed
Different complexs and Supramolecular self assembly body.Such as us it has been found that using caddy（CdCl2）As induction agent, it is utilized
" the honeycomb effect " of the tetrachloro cadmium acid radical anion formed in hydrochloric acid medium, induce melon ring and serial rare-earth metal ion direct
Coordination, a series of melon rings-rare earth metal tubulose supermolecule polymer is synthesized, and applied for this《Seven yuan of caddy induction
Melon ring-rare earth metal linear, tubular supermolecule polymer and synthetic method（Application number：201110388587.4》.Find again recently
With tetrachloro cadmium acid group ([CdCl4]2-) it is that derivant induces eight yuan of melon rings（Q[8]）Eight yuan synthesized with serial rare-earth metal ion
Melon ring-light rare earth metal Supramolecular self assembly body, and eight yuan of melon rings-heavy rare earth metal three-dimensional meshed super molecular polymer is not
Together, the separation available for weight rare earth metal.For this, we apply《A kind of eight yuan of melon ring-rare earth metal supermolecule polymers
And synthetic method and application（Application number：201310218642.4）》.Even same melon ring, at different conditions, can also have
Different coordination situation, form different complex and Supramolecular self assembly body.Such as us recently, it has been found that bar be present in cadmium nitrate
Under part, ortho position Tetramethyl melon ring and light rare earth metal（Nd、Sm、Eu）And heavy rare earth metal forms Supramolecular self assembly body and gathered
Compound, but ortho position Tetramethyl melon ring and light rare earth can not be induced（La、Ce、Pr）Metal forms the polymerization of Supramolecular self assembly body
Thing, and the method that can be formed Supramolecular self assembly body polymer using it and separate weight rare earth.For this, we apply《It is adjacent
Position Tetramethyl melon ring-rare earth supermolecule polymer and synthetic method and application（Application number：201310218642.4）》.And
In the present patent application be the discovery that ortho position Tetramethyl melon ring and heavy rare earth form adduct, but can not be with light rare earth（La、
Ce、Pr、Nd、Sm、Eu、Gd）Adduct is formed, and can form the nature difference of adduct using it and separate weight rare earth.
Present patent application is exactly to make ortho position Tetramethyl melon ring in neutral environment（o-TMeQ[6]）With serial rare-earth gold
Belong to ionization, synthesize a series of adduct of ortho position Tetramethyl melon ring-heavy rare earth metal ion hydrates.Utilize neighbour
Position Tetramethyl melon ring and heavy rare earth（Tb、Dy、Ho、Er、Tm、Yb、Lu）Metal ion hydrate formed adduct, but with it is light
Rare earth（La、Ce、Pr、Nd、Sm、Eu、Gd）Metal can not form the difference of adduct, point available for weight rare earth ion
From.
The content of the invention
It is an object of the invention to synthesize a series of ortho position Tetramethyl melon ring-heavy rare earth adducts, its conjunction is disclosed
Into method.Using ortho position Tetramethyl melon ring and heavy rare earth Tb, Dy, Ho, Er, Tm, Yb, Lu metal formation adduct, but with
Light rare earth La, Ce, Pr, Nd, Sm, Eu, Gd metal can not form the difference of adduct, point for weight rare earth ion
From.
Ortho position Tetramethyl melon ring-rare earth adduct of the present invention, it is with ortho position Tetramethyl melon ringo- TMeQ [6] with
Ortho position Tetramethyl melon ring-heavy rare earth Tb, Dy, Ho, Er, Tm, Yb, Lu adduction that rare earth metal salt synthesizes in aqueous
Thing, the chemical composition formula that signified ortho position Tetramethyl melon ring forms adduct with heavy rare earth are：
{[Ln(H2O)8 o-TMeQ[6]]·2(NO3)·Cl·xH2O}
Ln represents rare earth ion, and x is crystalline water molecules quantity 9 or 10.
The ortho position Tetramethyl melon ring-heavy rare earth adduct formed in the signified aqueous solution in neutral environment is：
(1) {Tb(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·9H2O
(2) {Dy(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·10H2O
(3) {Ho(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·10H2O
(4) {Er(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·9H2O
(5) {Tm(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·9H2O
(6) {Yb(H2O)8 o-TMeQ[6]}·2(NO3)·Cl·9H2O
Above-mentioned signified ortho position Tetramethyl melon ringo- TMeQ [6] chemical formula is C40H44N24O12, crystal structure such as accompanying drawing
1。
Ortho position Tetramethyl melon ring-rare earth adduct synthetic method described above, its synthetic method follow these steps
Carry out：
(1) willo- TMeQ [6] is completely dissolved to obtain solution A with the aqueous solution；
(2) by Ln (NO3)3It is completely dissolved to obtain solution B with the aqueous solution；
(3) solution A and B are pressedo-TMeQ[6]：Ln(NO3)3Equal to 1:7~9 mixed in molar ratio；
(4) stand.Crystal can not be grown for light rare earth La, Ce, Pr, Nd, Sm, Eu, Gd；And for heavy rare earth Tb and
The later heavy rare earth of atomic number, bigger according to atomic number, crystal grows the faster rule of speed and grows corresponding adducts crystal.
A kind of ortho position Tetramethyl melon ring-rare earth adduct synthetic method of the present invention, its solution is the aqueous solution.
A kind of ortho position Tetramethyl melon ring-rare earth adduct synthetic method of the present invention, its rare earth metal salt is rare earth nitre
Hydrochlorate.
A kind of ortho position Tetramethyl melon ring-rare earth adduct synthetic method of the present invention, it is to work aso-TMeQ[6]、Ln(NO3)3
In molar ratio 1:When 7~9, the fastest of crystal, yield highest are grown.
The application of ortho position Tetramethyl melon ring-rare earth adduct of the present invention, be using ortho position Tetramethyl melon ring with
Light rare earth metal La, Ce, Pr, Nd, Sm, Eu, Gd can not form adduct and ortho position Tetramethyl melon ring and heavy rare earth metal
The difference of adduct can be formed, the separation available for weight rare earth ion.
To synthesized melon ring group supermolecule polymer using X-ray single crystal diffraction, IR, DSC-TG decile in the present invention
Analysis means carry out structural characterization.
Patent 1 of the present invention）Used synthetic method has the features such as simple to operate, yield is high.2）Using can be formed
The difference of Supramolecular self assembly body polymer, the separation available for weight rare earth ion.
Brief description of the drawings
Fig. 1 ortho positions Tetramethyl melon ringo- TMeQ [6] crystal structure figure.
Fig. 2 in aqueous,（a）Heavy rare earth metal ion（Dy3+）, ortho position Tetramethyl melon ring（o-TMeQ[6]）Shape
Into complex；（b）Eacho-TMeQ[6]/Dy3+Complex is by three nitric acid acid radical anions（NO3 -）It surround；(c) it is each
Individual nitric acid acid radical anion is surround by three ortho position Tetramethyl melon rings；（d）o-TMeQ[6]/Dy3+Complex and nitric acid acid group
Anion（NO3 -）The b axle top views of alternate accumulation.(e) o-TMeQ[6]/Dy3+Complex and nitric acid acid radical anion（NO3 -）
The b axis side views of alternate accumulation.
The Supramolecular self assembly body that other heavy rare earth metals are formed with ortho position Tetramethyl melon ring has similar structures, is
Allomeric.Heavy rare earth is: Tb、Ho、Er、Tm、Yb、Lu.
Fig. 3oThe X-ray powder diffraction figure of-TMeQ [6]/Ln systems（Represent 7o- TMeQ [6]/Ln systems）；
Fig. 4oThe differential thermal of-TMeQ [6]/Ln system crystal（DTA）Analyze collection of illustrative plates.
Fig. 5oThe thermogravimetric of-TMeQ [6]/Ln system crystal（TG）Analyze collection of illustrative plates.
Fig. 6 witho- TMeQ [6] comparesoThe IR collection of illustrative plates of-TMeQ [6]/Ln systems.
Fig. 7 from containing mol ratio be 1:1 Nd3+And Dy3+The electron spectroscopy analysis result of crystal is obtained in mixed solution.
Specific implementation method
Embodiment 1：
In without neutral environment existing for derivant, heavy rare earth（Nitrate）Metal ion and ortho position Tetramethyl melon ring
Effect forms Supramolecular self assembly body implementation.With Dy (NO3)3Exemplified by illustrate：
Embodiment 1：Dy (NO are weighed respectively3)3·6H2The mg of O 27.49 (0.0567 mmol) are added in a beaker
The 1.0 mL aqueous solution, are heated to be sufficiently uniformly dissolved.WeighoThe mg of-TMeQ [6] 10 (0.0081 mmol), add 1.0 mL
The aqueous solution is heated to 70 DEG C, shakes several minutes, clarifies solution.Willo- TMeQ [6] solution injects above-mentioned mixed solution, shakes up.
Stand for 1 to a couple of days, colourless transparent crystal occur, yield is 50~60%.Its structural formula is { Dy (H2O)8Q[6]}·2(NO3)·
Cl·10(H2O)。
Embodiment 2：Dy (NO are weighed respectively3)3·6H2The mg of O 35.33 (0.0731 mmol) are added in a beaker
The 1.0 mL aqueous solution, are heated to be sufficiently uniformly dissolved.WeighoThe mg of-TMeQ [6] 10 (0.0081 mmol), add 1.0 mL
The aqueous solution is heated to 70 DEG C, shakes several minutes, clarifies solution.Willo- TMeQ [6] solution injects above-mentioned mixed solution, shakes up.
Stand for 1 to a couple of days, colourless transparent crystal occur, yield is 55~70%.Its structural formula is { Dy (H2O)8Q[6]}·2(NO3)·
Cl·10(H2O).Under similarity condition, it is homeomorphic that ortho position Tetramethyl melon ring forms structure with other heavy rare earth metals
Supermolecule polymer, its general structure are { [Ln (H2O)8Q[6]]·2(NO3)·Cl·xH2O}。
Embodiment 3：Supramolecular self assembly body polymer is formed using ortho position Tetramethyl melon ring and heavy rare earth metal, but
With light rare earth（La、Ce、Pr、Nd、Sm、Eu、Gd）Metal can not form the difference of Supramolecular self assembly body polymer, light to separate
Heavy rare earth metal ion.To separate Nd3+With Dy3+Exemplified by illustrate：
Nd (NO are weighed respectively3)3·6H2The mg of O 33.62 (0.0081 mmol), Dy (NO3)3·5H2O 35.33 mg
(0.0081 mmol) y adds the 2 mL aqueous solution, is heated to 70 DEG C, is allowed to be sufficiently uniformly dissolved in same beaker.Weigho-
The mg of TMeQ [6] 20 (0.016 mmol), add the 2.0 mL aqueous solution and be heated to 70 DEG C, shake several minutes, clarify solution.
Willo- TMeQ [6] solution injects above-mentioned mixed solution, shakes up.5 days are stood, caused precipitation separating, washing is to be measured, and yield exists
55~70%.
Claims (1)
- A kind of 1. method for separating weight rare earth metal, it is characterized in that utilizing ortho position Tetramethyl melon ring and light rare earth metal La, Ce, Pr, Nd, Sm, Eu, Gd can not form adduct and ortho position Tetramethyl melon ring and heavy rare earth later atomic number Tb Metal can form the difference of adduct, the separation available for weight rare earth ion.
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