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Nitrogenous multitooth transition metal complex and preparation method thereof

A transition metal, complex technology, applied in the direction of zinc organic compounds, cadmium organic compounds, cobalt organic compounds, etc., can solve the problem of no reports and other issues

Inactive Publication Date: 2013-04-03
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nitrogen-containing multidentate transition metal complexes corresponding to nitrogen-containing multidentate ligands of the "benzimidazole-aromatic ring-benzimidazole" type have not been reported so far.

Method used

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  • Nitrogenous multitooth transition metal complex and preparation method thereof
  • Nitrogenous multitooth transition metal complex and preparation method thereof
  • Nitrogenous multitooth transition metal complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] with general formula C 28 h 32.64 N 6 o 2。32 Cl 2 The material composition represented by Co is taken as an example. In the general formula, M is cobalt element, m is 0.32, x is 0, and y is 1.

[0023] Its preparation method is as follows:

[0024] 1. Preparation of 2,2′-(1,4-dimethylbenzene-1′,1″-diyl)bisbenzimidazole ligand

[0025] Add 50mL polyphosphoric acid into the reactor, preheat to 100°C, stir, add 5.8g terephthalic acid and 7.2g m-phenylenediamine in sequence, the molar ratio of terephthalic acid to m-phenylenediamine is 1: 2. Stir and react at 200-220°C for 4-5 hours, cool to 70°C, add ice water 3 times the volume of the reactant to mix, continue to stir and react for 0.5 hour, filter with suction, wash with water, wash with saturated Na 2 CO 3 The pH value of the solution was adjusted to 9, suction filtered and washed with water to obtain a crude product, which was recrystallized from a solution with a volume ratio of dimethylformamide to water of 1:...

Embodiment 2

[0032] with general formula C 28 h 32.64 N 6 o 2。32 Cl 2 The material composition represented by Cd is taken as an example. In the general formula, M is cadmium element, m is 0.53, x is 0, and y is 1.

[0033] Its preparation method is as follows:

[0034] Preparation of 2,2′-(1,4-dimethylbenzene-1′,1″-diyl)bisbenzimidazole ligand Step 1 is the same as in Example 1.

[0035] In step 2 of preparing nitrogen-containing multidentate transition metal complexes, equimolar CdCl 2 4H 2 O instead of CoCl 2 ·6H 2 O, the other steps of this step are the same as in Example 1, and a nitrogen-containing multidentate transition metal complex is prepared with a yield of 65.0%.

[0036] The prepared nitrogen-containing multidentate transition metal complex belongs to the triclinic crystal system, the P-1 space group, and the unit cell parameter a is b for c for α is 71.759°, β is 88.915°, and γ is 77.546°.

[0037] Elemental analysis of the prepared product, theoretical value:...

Embodiment 3

[0040] with general formula C 28 h 32 N 8 o 8 The material composition represented by Zn is taken as an example. In the general formula, M is zinc element, m is 0, x is 1, and y is 0.

[0041] Its preparation method is as follows:

[0042] Preparation of 2,2′-(1,4-dimethylbenzene-1′,1″-diyl)bisbenzimidazole ligand Step 1 is the same as in Example 1.

[0043] In step 2 of preparing nitrogen-containing multidentate transition metal complexes, equimolar ZnNO 3 ·6H 2 O instead of CoCl 2 ·6H 2 O, the other steps of this step are the same as in Example 1, and a nitrogen-containing multidentate transition metal complex is prepared with a yield of 50.4%.

[0044] The prepared nitrogen-containing multidentate transition metal complex belongs to the triclinic crystal system, the P1 space group, and the unit cell parameter a is b for c for α is 74.7010°, β is 86.4200°, and γ is 73.3420°.

[0045] Elemental analysis of the prepared product, theoretical value: C 49.90%, H 4....

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Abstract

The invention relates to a nitrogenous multitooth transition metal complex is composed of a material represented by the general formula C28H32+2mN6+2xO2+m+6xCl2yM, wherein M is zinc or cadmium or cobalt, 0<=m<=0.53, x is 0 or 1, and y is 0 or 1; and x and y are not 0 at the same time, and x and y are not 1 at the same time. The preparation method comprises the following steps: preparing a 2,2'-(1,4-dimethylphenyl-1',1'-diyl)bibenzimidazole ligand, and preparing the nitrogenous multitooth transition metal complex. The prepared nitrogenous multitooth transition complex has magnetic property and fluorescence, and can be used for functional metal organic materials.

Description

technical field [0001] The invention belongs to the technical field of synthesizing novel nitrogen-containing multi-dentate transition metal complexes, in particular to bisbenzimidazole transition metal complexes. Background technique [0002] Due to their unique structures, metal-organic materials exhibit novel functional properties such as ion exchange, gas storage, separation, host-guest chemistry, optics, magnetism, catalysts, fluorescence, etc., which have attracted extensive attention in recent decades. In metal-organic materials, the design of the ligands usually selects aromatic rings connected to nitrogen heterocycles, among which the "pyridine-aromatic ring-pyridine" and "pyrrole-aromatic ring-pyrrole" ligands have attracted the most attention. Imidazole and benzimidazole, which have a five-membered ring imine structure similar to pyrrole, are one of the commonly used ligands in the research of organometallic chemistry. The literature "J.Am.Chem.Soc., 1957, 79(2),...

Claims

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Application Information

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IPC IPC(8): C07F3/06C07F3/08C07F15/06C09K11/06H01F1/42
Inventor 聂万丽鲍尔佐夫马克西姆刘敏霞
Owner NORTHWEST UNIV
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