CN117924328A - Metal oxygen cluster compound of boropyrazole ligand, and preparation method and application thereof - Google Patents

Metal oxygen cluster compound of boropyrazole ligand, and preparation method and application thereof Download PDF

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Publication number
CN117924328A
CN117924328A CN202211321324.6A CN202211321324A CN117924328A CN 117924328 A CN117924328 A CN 117924328A CN 202211321324 A CN202211321324 A CN 202211321324A CN 117924328 A CN117924328 A CN 117924328A
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boropyrazole
ligand
cluster
compound
metalloxy
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张健
陈剑冰
方伟慧
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Fujian Institute of Research on the Structure of Matter of CAS
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Fujian Institute of Research on the Structure of Matter of CAS
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Abstract

The invention belongs to the technical field of crystal material preparation, and particularly relates to a boron pyrazole ligand metal oxide cluster compound and a preparation method and application thereof, wherein the preparation method comprises the following steps: and mixing the reaction raw materials of metal salt, organic acid, pyrazole and solvent, and performing solvothermal reaction to obtain the metal oxide cluster compound. The method disclosed by the invention has the advantages of simple synthesis steps, high repeatability, capability of performing stable synthesis in a large quantity, low requirement on the purity of raw materials, high yield of more than 40%, capability of performing macro synthesis and convenience for mass production. The raw materials are easy to obtain, the price is low, the cost is low, and the method is beneficial to mass production. In addition, the post-treatment of the method is simple and easy, the pure-phase crystalline product can be obtained only by simple alcohol washing and separation and airing at room temperature, the pollution is less, and the method meets the green and environment-friendly requirements.

Description

Metal oxygen cluster compound of boropyrazole ligand, and preparation method and application thereof
Technical Field
The invention belongs to the technical field of crystal material preparation, and particularly relates to a boron pyrazole ligand metal oxide cluster compound, a preparation method and application thereof.
Background
Phenylboronic acid and derivatives thereof are an important class of compounds due to their wide application in organic synthesis, catalysis, supermolecular chemistry and material engineering. The crystalline metal clusters are clear and controllable in atomic structure, rich and various in structure types, and capable of simulating and researching metal oxides from a molecular level, and attract the attention of researchers in various fields including inorganic chemistry, organic chemistry, physical chemistry and the like.
However, phenylboronic acid clusters have been less studied than carboxylic acid metal clusters. For this reason, the development of novel metal clusters of phenylboronic acids is of great significance for the synthesis and performance studies of novel structural types.
The polypyrazolylborate ligand is an example of the oldest and most classical scorpion acid salt ligand system, which was first reported in 1967 during the early origin of the scorpion ligand class, a class of tridentate ligands containing multiple N sites, covalently tethered, of the general formula [ R nB(pz)4-n]- ] wherein r=h, alkyl or aryl, pz=pyrazole or substituted pyrazole, which has found widespread use in coordination chemistry, including bio-inorganic chemistry, homogeneous catalysis and materials science, and complexes of this class of ligands with most metals or metalloids in the periodic table of elements have been prepared today.
Since the introduction of "second generation" ligands for controlled coordination in 1986, the development of this field has entered an acceleration phase, more complexes have been developed to meet the market demands, and currently, the preparation of complexes is usually performed by first synthesizing polypyrazolylborate ligands and then chelating with metals, the development of existing polypyrazolylborate ligands is mostly achieved by multi-step organic synthesis, and some active reagents are needed in the reaction: for example, a grignard reagent is needed as a reaction intermediate to combine a benzene ring and pyrazole, the reaction process is long and complex, and the prepared complex has a single configuration.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the metal oxygen cluster compound of the boropyrazole ligand, and the preparation method and the application thereof, and the synthesis of the metal oxygen cluster compound has good repeatability, and the method is concise and efficient and meets the green environmental protection requirement.
To achieve the above object, a first aspect of the present invention provides a metalloxy cluster compound of a boropyrazole ligand, wherein the metalloxy cluster compound of the boropyrazole ligand has a molecular formula: ma (L 1)b(HL2) cN
Wherein M is selected from at least one of aluminum or transition metal, L 1、L2 are the same or different and are independently selected from boron pyrazole ligands, and N is a solvent;
a. b and c are 1 or 2 at the same time;
the boropyrazole ligand has a structure shown in formula 1:
wherein R may be ortho-, meta-or para-substituted and is selected from hydrogen, hydroxy, C1-6 alkyl, C1-6 alkoxy, amino, nitro or halogen atom.
According to an embodiment of the present invention, the method for synthesizing the boropyrazole ligand of formula 1 is as follows:
According to an embodiment of the invention, said M is selected from at least one of aluminium, iron, copper, nickel, preferably aluminium, iron, copper, for example aluminium.
According to an embodiment of the invention, the N is selected from one or more of an organic solvent, preferably N, N-dimethylformamide, N-dimethylacetamide, acetonitrile, tetrahydrofuran, e.g. acetonitrile.
According to an embodiment of the present invention, the aluminoxy cluster of the boropyrazole ligand has the formula: [ Al 2(L1)2(HL2)2. N ].
Preferably, the ferron of the boropyrazole ligand has the formula: [ Fe (L 1)(HL2). N ].
Preferably, the copper oxo cluster of the boropyrazole ligand has a molecular formula of: [ Cu (L 1)(HL2). N ].
Wherein, L 1 and HL 2 are respectively structures formed by removing two H and one H in the coordination process of the boropyrazole ligand and the metal, and interestingly, the metal matched with the boropyrazole ligand is different from the metal matched with the boropyrazole ligand along with the different number of removed H 2 O molecules: when H 2 O of one molecule is removed, the boropyrazole ligand can only carry out in-situ mononuclear assembly with Al; boron pyrazole ligands also have universality of in situ mononuclear assembly to other metals (Fe, cu, ni, etc.) when two molecules of H 2 O are removed.
According to an embodiment of the present invention, the aluminoxy cluster of the boropyrazole ligand has a chemical formula of C 51H52Al2B4N17O4, preferably the aluminoxy cluster of the boropyrazole ligand has an Mr of 1064.27.
According to an embodiment of the invention, the aluminoxy cluster of the boropyrazole ligand is a crystalline compound.
According to an embodiment of the invention, the crystalline system of the aluminoxy cluster crystalline compound of the boropyrazole ligand is monoclinic, the space group is P-1, and the unit cell parameter a isB is/>C is/>Alpha is 100.27 DEG, beta is 97.06 DEG, gamma is 117.66 DEG, V is/>
According to an embodiment of the present invention, the aluminoxy cluster crystalline compound of a boropyrazole ligand has a spatial structure substantially as described in fig. 1.
According to an embodiment of the present invention, the aluminoxy cluster crystalline compound of a boropyrazole ligand has an X-ray powder diffraction pattern substantially as shown in fig. 2.
According to an embodiment of the present invention, the aluminoxy cluster crystalline compound of a boropyrazole ligand has a thermogravimetric analysis substantially as shown in fig. 3.
According to an embodiment of the present invention, the aluminoxy cluster crystalline compound of boropyrazole ligands has an infrared spectrum substantially as shown in fig. 4.
According to an embodiment of the present invention, the aluminoxy cluster crystalline compound of the boropyrazole ligand is a pure phase colorless bulk crystalline compound.
According to an embodiment of the invention, the aluminoxy cluster of the boropyrazole ligand has a morphology substantially as shown in fig. 5.
According to an embodiment of the invention, the aluminoxy cluster of the boropyrazole ligand is an organic-inorganic hybrid compound.
According to an embodiment of the present invention, the crystalline form of the aluminoxy cluster of the boropyrazole ligand has a symmetrical structure.
According to an embodiment of the invention, the ferredoxin compound of the boropyrazole ligand has the chemical formula C 30H28FeB2N12F2.
According to an embodiment of the invention, the ferrite clusters of the boropyrazole ligands are pure phase red bulk crystals.
According to an embodiment of the invention, the ferrite cluster compound of the boropyrazole ligand is an organic-inorganic hybrid compound.
According to an embodiment of the present invention, the crystalline form of the ferrite cluster compound of the boropyrazole ligand has a symmetrical structure.
According to an embodiment of the invention, the copper oxo-cluster of the boropyrazole ligand has the chemical formula C 30H32CuB2N12.
According to an embodiment of the invention, the copper oxide cluster of the boropyrazole ligand is a pure phase blue bulk crystalline.
According to an embodiment of the invention, the copper oxo-cluster of the boropyrazole ligand is an organic-inorganic hybrid compound.
According to an embodiment of the present invention, the crystalline state of the copper oxide cluster of the boropyrazole ligand has a symmetrical structure.
Another object of the present invention is to provide a method for preparing a metalloxy cluster of the above boropyrazole ligand, the method comprising the steps of: and mixing the reaction raw materials of metal salt, organic acid, pyrazole and solvent, and performing solvothermal reaction to obtain the metal oxide cluster compound.
According to an embodiment of the invention, the metal salt is a soluble metal salt.
According to an embodiment of the present invention, the metal salt is selected from one or more of soluble aluminum salt, soluble iron salt, and soluble copper salt.
According to an embodiment of the invention, the aluminium salt is one or more of aluminium ethoxide, aluminium tert-butoxide, aluminium isobutanol, aluminium n-butoxide, aluminium n-propoxide and aluminium isopropoxide, preferably aluminium isopropoxide.
According to an embodiment of the invention, the iron salt is at least one of ferric chloride, ferric nitrate, ferric sulfate, for example ferric chloride.
According to an embodiment of the invention, the copper salt is at least one of copper nitrate, copper chloride, copper sulphate, for example copper nitrate.
According to an embodiment of the present invention, the organic acid is at least one selected from the group consisting of a substituted or unsubstituted nitrogen-containing pentaboric acid, a substituted or unsubstituted six-membered organic aromatic ring boric acid, and preferably phenylboric acid.
According to an embodiment of the present invention, the solvent is one or more of N, N-dimethylformamide, N-dimethylacetamide, acetonitrile, tetrahydrofuran, preferably acetonitrile.
According to an embodiment of the invention, the molar ratio of the metal salt to the organic acid is 1 (0.01-3), preferably 1 (0.05-2), for example 1 (0.1-1.5).
According to an embodiment of the invention, the molar ratio of the metal salt to the pyrazole is 1 (0.01-100), preferably 1 (0.1-90), for example 1 (1-90).
According to an embodiment of the invention, the solvothermal reaction temperature is 40-160 ℃; preferably the temperature of the solvothermal reaction is from 60 to 130 ℃, further preferably the temperature of the solvothermal reaction is from 70 to 100 ℃, for example 100 ℃.
According to an embodiment of the invention, the solvothermal reaction time is 48-168 hours; preferably, the time of the solvothermal reaction is 48 to 150 hours, and more preferably, the time of the solvothermal reaction is 60 to 100 hours, for example, 50 hours, 60 hours, 72 hours, 80 hours, 90 hours, 100 hours, 110 hours, 120 hours, or any point value in a range of values consisting of any two points.
As an example, the solvothermal reaction is 120 hours or 168 hours at 80 ℃, or 72 hours or 96 hours at 100 ℃.
According to an embodiment of the invention, the method comprises the steps of:
1) Mixing metal salt, organic acid, pyrazole and solvent, and performing solvothermal reaction to prepare a mixture;
2) Washing and separating the mixture obtained after the reaction in the step 1) to obtain a bulk crystalline substance.
According to an embodiment of the invention, the solvothermal reaction is carried out under isothermal conditions, preferably isothermal reaction means a reaction at constant temperature, for example in a heating device (such as an oven) at constant temperature.
According to an embodiment of the invention, the solvothermal reaction is carried out in an atmospheric or pressure vessel, for example in a glass bottle or polytetrafluoroethylene pressure vessel.
According to an embodiment of the invention, step 2) is preceded by the further step of: the mixture was cooled to room temperature.
According to an embodiment of the invention, step 2) is followed by a step of washing the isolated crystalline material.
Preferably, the washing comprises washing the separated crystalline substance with water or alcohol, and airing at room temperature.
According to an embodiment of the present invention, the alcohol is selected from at least one of low boiling alcohols, for example, at least one of methanol, ethanol, n-propanol, or the like.
According to an embodiment of the present invention, the yield of the aluminoxy compound of the boropyrazole ligand is 30% or more, preferably 50% or more, further preferably 60% or more, for example 40%, 50%, 60%, 70%, 80%, 90% or more.
The invention also provides a metal oxygen cluster compound of the boropyrazole ligand or application of the metal oxygen cluster compound of the boropyrazole ligand prepared by the method, and the application is preferably used in the fields of ceramics, medicines, electronics and the like.
According to an embodiment of the invention, the use of the aluminoxane clusters in a nonlinear optical material, an adsorbent, or a catalyst (support).
According to an embodiment of the present invention, the aluminum oxide cluster compound is applied at a temperature of 100 ℃ or lower, for example, 80 ℃ or lower, and more preferably 70 ℃ or lower.
The invention also provides an organic reaction catalytic material, which comprises the aluminum oxide cluster compound or the aluminum oxide cluster compound of the boron pyrazole ligand prepared by the method.
According to embodiments of the present invention, the catalytic material may be used to catalyze an N-H insertion reaction between N-methylaniline and methyl phenyl diazonium acetate.
The invention also provides an organic-inorganic aluminum oxide cluster material, which comprises the aluminum oxide cluster or the aluminum oxide cluster of the boron pyrazole ligand prepared by the method.
According to an embodiment of the invention, the alumoxane cluster material comprises a nonlinear optical material, a catalyst (support), or an adsorbent.
Advantageous effects
1. According to the method for preparing the metal oxide cluster compound of the boropyrazole ligand, after the reaction raw materials are mixed, the metal oxide cluster compound of the boropyrazole can be obtained through one-step self-assembly reaction by a solvothermal synthesis method. The raw materials are easy to obtain, the price is low, the cost is low, and the method is beneficial to mass production. In addition, the post-treatment of the method is simple and easy, the pure-phase crystalline product can be obtained only by simple alcohol washing and separation and airing at room temperature, the pollution is less, and the method meets the green and environment-friendly requirements.
2. The aluminoxy cluster compound of the boropyrazole ligand prepared by the invention has better stability in air and can be used in the fields of ceramics, medicines, electronics and the like.
Drawings
FIG. 1 is a schematic diagram showing the crystal structure of the crystalline product prepared in example 1 of the present invention;
FIG. 2 is an X-ray powder diffraction pattern of the crystalline product prepared in example 1 of the present invention; the simulation value is an X-ray powder diffraction pattern obtained by simulation according to a crystal structure; the experimental value is an X-ray powder diffraction pattern obtained by testing on an X-ray powder diffractometer;
FIG. 3 is a thermogravimetric analysis of the crystalline product prepared in example 1 of the present invention;
FIG. 4 is an infrared spectrum of the crystalline product prepared in example 1 of the present invention;
FIG. 5 is a photograph of a crystalline product prepared in example 1 of the present invention;
FIG. 6 is a reaction formula of an aluminum oxide cluster a (C 51H52Al2B4N17O4) of application example 1 of the present invention in which N-H is inserted between N-methylaniline and methyl phenyl diazonium acetate;
FIG. 7 is a schematic view showing the crystal structure of in-situ Fe mononuclear generation of boropyrazole ligands in application example 2 of the present invention;
FIG. 8 is a schematic diagram showing the in-situ generation of Cu single nuclei by using the boropyrazole ligand in application example 2 of the present invention.
Detailed Description
The materials according to the invention, as well as the methods of preparation and use thereof, will be described in further detail below in connection with specific examples. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All techniques implemented based on the above description of the invention are intended to be included within the scope of the invention.
Unless otherwise indicated, the starting materials and reagents used in the following examples were either commercially available or may be prepared by known methods.
In the following examples: the analysis of the single crystal structure uses a Metal Jet D2 single crystal diffractometer of Japanese physics; the X-ray powder diffraction uses a radiation source of Cu-K alpha rays.
Example 1
Preparation of AlO cluster A
Aluminum isopropoxide (1.47 mmol), phenylboronic acid (1.0 mmol), pyrazole 2g and acetonitrile (2 mL) are placed in a 20mL glass bottle, mixed uniformly at room temperature, the mixture is kept at constant temperature in a 100 ℃ oven for 5 days, taken out, naturally cooled to room temperature, the crystalline substance is separated and then washed by ethanol, and naturally dried in air, thus obtaining a colorless transparent bulk crystalline target product with the yield of about 50% (based on the mass of aluminum isopropoxide).
Example 2
Macro preparation of aluminum oxide cluster compound a
Aluminum isopropoxide (14.7 mmol), phenylboronic acid (10.0 mmol), pyrazole 20g and acetonitrile (20 mL) are placed in a 500mL blue cap bottle, the mixture is uniformly mixed at room temperature, the mixture is kept at constant temperature in a 100 ℃ oven for 5 days, the mixture is taken out and naturally cooled to room temperature, crystalline substances are separated, then the mixture is washed by ethanol, and the mixture is naturally dried in air, thus obtaining a colorless bulk crystalline target product.
Referring to fig. 1, which is a schematic structural diagram of the target product prepared in example 1, it can be seen from the figure that the prepared compound has 2 aluminum atoms, and the aluminum atom ring peripheral ligands are two boron pyrazole ligands with one H removed, and the two boron pyrazole ligands with one H removed are connected with the aluminum atoms.
Referring to fig. 2, the target product prepared in example 1 has an X-ray powder diffraction pattern substantially consistent with a theoretical value, which indicates that the target product has higher purity and is stable in air.
Referring to fig. 3, the results of thermogravimetric analysis of the target product prepared in example 2 show that the target product has better stability at a temperature below 100 ℃ and a higher decomposition rate at a temperature exceeding 100 ℃, so that the target product aluminum oxide cluster compound prepared in example 1 should be used as a material, the optimal temperature range of the corresponding material should be below 100 ℃, and the material may be unstable at high temperature.
Referring to FIG. 4, the Al-O cluster core of the target product aluminum oxide cluster prepared in example 1 has a vibration characteristic peak of 1000-500cm -1 and the vibration characteristic peak of the organic ligand 1750-1000cm -1, which are consistent with the structure shown in FIG. 1.
Referring to fig. 5, the aluminum oxide cluster compound a prepared in example 1 is colorless bulk crystalline.
The target product prepared in the embodiment 2 is completely the same as the target product prepared in the embodiment 1, so that the macro preparation method for preparing the aluminum oxide cluster compound a is simple and easy to operate, and only the feeding amount is required to be enlarged in proportion, thereby being convenient for large-scale production.
The crystal parameters of the crystalline substance of boropyrazole aluminum oxide cluster compound a prepared in example 1 are shown in table 1:
TABLE 1 Crystal parameters of aluminum oxide cluster a in example 1
Application example 1
Application of aluminum oxide cluster compound in organic catalysis
1Mmol of the aluminum oxide cluster compound a crystal prepared in example 2 was taken, ultrasonically dispersed in 10ml of dichloromethane solvent, and 0.2 mmolN-methylaniline and 0.4mmol of phenyl diazonium methyl acetate were added to react at 80℃for 17 hours to obtain 33.3mg of the product with a yield of 65%.
Fig. 6 shows the chemical reaction formula of the present example, and it can be seen that the aluminoxane cluster compound a prepared in example 2 can be used for the reaction of organocatalytic N-H intercalation, has a yield of 65%, and can be used as a potential organocatalytic crystalline material.
Application example 2
Application of pyrazole thermal in-situ growth boron pyrazole ligand in other metals
FeCl 3 (1.00 mmol), 3-F-phenylboronic acid (1.0 mmol), pyrazole 2g and acetonitrile (2 mL) are placed in a20 mL glass bottle, the mixture is uniformly mixed at room temperature, the mixture is kept at constant temperature in a 100 ℃ oven for 5 days, taken out, naturally cooled to room temperature, the crystalline substance is separated, then washed by ethanol, and naturally dried in air, thus obtaining the red transparent blocky crystalline target product. The yield was about 50% (based on the mass of FeCl 3) and the structure is shown in FIG. 7.
Cu (NO 3)2 (1.00 mmol), phenylboronic acid (1.0 mmol), pyrazole 2g and acetonitrile (2 mL) are placed in a 20mL glass bottle, mixed uniformly at room temperature, the mixture is kept at constant temperature in a 100 ℃ oven for 5 days, taken out, naturally cooled to room temperature, the crystalline substance is separated, then washed by ethanol and naturally dried in air, and the blue transparent bulk crystalline target product is obtained, wherein the yield is about 31% (based on the mass of Cu (NO 3)2) and the structure is shown in figure 8.
Referring to fig. 7 and 8, it can be seen that the ligand is universal for in situ generation of metal mononuclei.
The foregoing description of the specific embodiments of the present invention has been presented by way of example. The scope of the invention is not limited to the exemplary embodiments described above. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of protection of the claims of the present invention.

Claims (10)

1. A metalloxy cluster of a boropyrazole ligand, characterized in that the metalloxy cluster of the boropyrazole ligand has the formula: ma (L 1)b(HL2) cN, wherein M is selected from at least one of aluminum or transition metals, L 1、L2, which are the same or different, are independently selected from boropyrazole ligands, and N is a solvent; a. b and c are 1 or 2 at the same time;
the boropyrazole ligand has a structure shown in formula 1:
wherein R may be ortho-, meta-or para-substituted and is selected from hydrogen, hydroxy, C1-6 alkyl, C1-6 alkoxy, amino, nitro or halogen atom.
2. The metalloxy cluster of boropyrazole ligands according to claim 1, wherein the method of synthesizing the boropyrazole ligands of formula 1 is as follows:
Preferably, M is at least one selected from the group consisting of aluminum, iron, copper, and nickel, preferably aluminum, iron, and copper, for example, aluminum.
Preferably, the N is selected from an organic solvent, preferably one or more of N, N-dimethylformamide, N-dimethylacetamide, acetonitrile, tetrahydrofuran.
3. The metalloxy cluster of boropyrazole ligands according to claim 1 or 2, characterized in that the aluminoxy cluster of boropyrazole ligands has the formula: [ Al 2(L1)2(HL2)2. N ].
Preferably, the iron cluster compound of the boropyrazole ligand has a molecular formula of: [ Fe (L 1)(HL2). N ].
Preferably, the copper cluster compound of the boropyrazole ligand has a molecular formula of: [ Cu (L 1)(HL2). N ].
4. A metalloxy cluster of a boropyrazole ligand according to claim 3, wherein the boropyrazole ligand has a formula of C 51H52Al2B4N17O4, preferably the boropyrazole ligand has an Mr of 1064.27.
Preferably, the aluminoxy cluster of the boropyrazole ligand is a crystalline compound.
Preferably, the crystalline system of the aluminoxy cluster compound of the boropyrazole ligand is monoclinic system, the space group is P-1, and the unit cell parameter a isB is/>C is/>Alpha is 100.27 degrees, beta is 97.06 degrees, gamma is 117.66 degrees and V is
Preferably, the iron cluster of the boropyrazole ligand has a chemical formula of C 30H28FeB2N12F2, preferably the iron cluster of the boropyrazole ligand is a crystalline compound.
Preferably, the copper cluster compound of the boropyrazole ligand has a chemical formula of C 30H32CuB2N12, preferably the copper cluster compound of the boropyrazole ligand is a crystalline compound.
5. A process for the preparation of a metalloxy cluster of a boropyrazole ligand according to any one of claims 1 to 4, comprising the steps of: and mixing the reaction raw materials of metal salt, organic acid, pyrazole and solvent, and performing solvothermal reaction to obtain the metal oxide cluster compound.
Preferably, the metal salt is a soluble metal salt, for example, the metal salt is one or more selected from soluble aluminum salt, soluble iron salt and soluble copper salt.
Preferably, the organic acid is at least one selected from the group consisting of a substituted or unsubstituted nitrogen-containing pentaboric acid and a substituted or unsubstituted six-membered organic aromatic ring boric acid, preferably phenylboric acid.
Preferably, the solvent is one or more of N, N-dimethylformamide, N-dimethylacetamide, acetonitrile, tetrahydrofuran and combinations thereof.
6. The process for the preparation of a metalloxy cluster of a boropyrazole ligand according to claim 5, wherein the molar ratio of the metal salt to the organic acid is 1 (0.01-3), preferably 1 (0.05-2).
Preferably, the molar ratio of the metal salt to the pyrazole is 1 (0.01-100), preferably 1 (0.1-90).
According to an embodiment of the invention, the solvothermal reaction temperature is 40-160 ℃; preferably the temperature of the solvothermal reaction is from 60 to 130 ℃, further preferably the temperature of the solvothermal reaction is from 70 to 100 ℃, for example 100 ℃.
Preferably, the solvothermal reaction time is 48-168 hours; preferably the solvothermal reaction time is from 48 to 150 hours.
7. A process for the preparation of a metalloxy cluster of a boropyrazole ligand according to claim 5 or 6, comprising the steps of:
1) Mixing metal salt, organic acid, pyrazole and solvent, and performing solvothermal reaction to prepare a mixture;
2) Washing and separating the mixture obtained after the reaction in the step 1) to obtain a bulk crystalline substance.
Preferably, the solvothermal reaction is carried out under isothermal conditions.
Preferably, step 2) is followed by a step of washing the isolated crystalline material.
8. Use of a metallothione of a boropyrazole ligand according to any one of claims 1 to 4 or prepared by a process according to any one of claims 5 to 7, preferably in the fields of ceramics, medicine, electronics and the like.
Preferably, the use of the aluminoxane clusters in a nonlinear optical material, an adsorbent, or a catalyst (support).
Preferably, the aluminum oxide cluster is applied at a temperature of 100 ℃ or less, for example, 80 ℃ or less.
9. An organic reaction catalytic material comprising a metalloxy cluster of a boropyrazole ligand according to any one of claims 1 to 4 or an aluminoxy cluster of a boropyrazole ligand prepared by the method according to any one of claims 5 to 7.
Preferably, the catalytic material may be used to catalyze an N-H intercalation reaction between N-methylaniline and methyl phenyl diazonium acetate.
10. An organic-inorganic aluminoxy cluster material comprising a metalloxy cluster of a boropyrazole ligand according to any one of claims 1 to 4 or an aluminoxy cluster of a boropyrazole ligand prepared by the method according to any one of claims 5 to 7.
Preferably, the alumoxane cluster material comprises a nonlinear optical material, a catalyst (support), or an adsorbent.
CN202211321324.6A 2022-10-26 2022-10-26 Metal oxygen cluster compound of boropyrazole ligand, and preparation method and application thereof Pending CN117924328A (en)

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