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Tetrazolyl cobalt (II) complex magnetic material and preparation method and application thereof

A technology of coordination polymers and tetrazolium, which is applied in the fields of magnetism of organic materials/organic magnetic materials, cobalt organic compounds, magnetic recording, etc., can solve problems such as limited research, achieve good reproducibility, high yield, The effect of high thermal stability

Inactive Publication Date: 2013-05-08
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, so far, studies on paramagnetic metal coordination polymers using 5-methyl-1H-tetrazolium and isophthalic acid as mixed ligands have been limited.

Method used

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  • Tetrazolyl cobalt (II) complex magnetic material and preparation method and application thereof
  • Tetrazolyl cobalt (II) complex magnetic material and preparation method and application thereof
  • Tetrazolyl cobalt (II) complex magnetic material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Synthesis of 5-methyl-1H-tetrazolium and isophthalic acid mixed ligand cobalt(II) coordination polymer A:

[0028] Dissolve 5-methyl-1H-tetrazole (0.3 mmol, 25.2 mg), isophthalic acid (0.2 mmol, 33.2 mg) and cobalt nitrate hexahydrate (0.3 mmol, 87.3 mg) in double distilled water (7.0 mL) and ethanol (3.0 mL), adjust the pH to 4 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. After being incubated at 180° C. for three days, the temperature was programmed to cool down to room temperature to obtain a red bulky single crystal, which was then washed with ethanol and dried in air. See figure 1 crystal structure diagram.

Embodiment 2

[0030] Synthesis of 5-methyl-1H-tetrazolium and isophthalic acid mixed ligand cobalt(II) coordination polymer B:

[0031] Dissolve 5-methyl-1H-tetrazolium (0.3 mmol, 25.2 mg), isophthalic acid (0.2 mmol, 33.2 mg) and cobalt nitrate hexahydrate (0.3 mmol, 87.3 mg) in double distilled water (7.0 mL) and ethanol (3.0 mL), adjust the pH to 4 with triethylamine, stir for a few minutes and seal it into a hydrothermal kettle. After being incubated at 190° C. for three days, the temperature was programmed to cool down to room temperature to obtain a red blocky single crystal, which was then washed with ethanol and dried in air. See figure 1 crystal structure diagram.

Embodiment 3

[0033] Synthesis of 5-methyl-1H-tetrazolium and isophthalic acid mixed ligand cobalt(II) coordination polymer C:

[0034] Dissolve 5-methyl-1H-tetrazole (0.3 mmol, 25.2 mg), isophthalic acid (0.2 mmol, 33.2 mg) and cobalt nitrate hexahydrate (0.35 mmol, 101.9 mg) in double distilled water (7.0 mL) and ethanol (3.0 mL), adjust the pH to 5 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. After being incubated at 180° C. for three days, the temperature was programmed to cool down to room temperature to obtain a red bulky single crystal, which was then washed with ethanol and dried in air. See figure 1 crystal structure diagram.

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Abstract

The invention relates to a 5-methyl-1H-tetrazole and isophthalic acid mixed ligand cobalt (II) coordination polymer magnetic material, and a preparation method and application thereof. The chemical formula of the coordination polymer magnetic material provided by the invention is {[Co7(H2O)2(mu3-OH)4(mtz)2(ip)4].13 / 4H2O}, wherein mtz is the 5-methyl tetrazole anion with valence of -1, and ip is the isophthalic acid anion with valence of -2. The coordination polymer magnetic material is prepared by solvothermal synthesis, and is high in productivity and good in reproducibility. The coordination polymer magnetic material is the three-dimensional cobalt (II) compound simultaneously including 5-methyl-1H-tetrazole and isophthalic acid mixed ligand, presents continuous two-step field-induced metamagnetic transition and spin-flop transition, which are from antiferromagnetic order to week spontaneous magnetization, in different external magnetic fields, and can be used as molecular-based magnetic material to have great application value in the field of material science.

Description

[0001] This patent application is supported by the Tianjin Natural Science Foundation (funding numbers: 10JCZDJC21600 and 10JCYBJC04800) and the National Natural Science Foundation of China (funding numbers: 20973125, 21171129 and 21173157). technical field [0002] The invention relates to the technical field of metal-organic coordination polymers and their molecular-based magnetic materials, in particular to the mixed-ligand three-dimensional cobalt (II) coordination polymer magnetic materials containing 5-methyl-1H-tetrazolium ligands Preparation method and application thereof, the compound is a cobalt (II) coordination polymer containing 5-methyl-1H-tetrazolium and isophthalic acid mixed ligands at the same time, and its magnetic properties make it possible to be used as a molecular base Magnetic materials find application in the field of materials science. Background technique [0003] In recent years, the design and synthesis of molecular-based functional materials wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06H01F1/42G11B5/62
Inventor 赵小军杨恩翠刘忠义刘婧
Owner TIANJIN NORMAL UNIVERSITY
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