Mixed ligand cobalt (II) coordination polymer magnetic material, preparation method and application thereof

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

Inactive Publication Date: 2012-10-10
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, the research on paramagnetic metal coordination polymers with 5-methyl-1H-tetrazolium and 2,3-pyrazinedicarboxylic acid as mixed ligands is still limited.

Method used

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  • Mixed ligand cobalt (II) coordination polymer magnetic material, preparation method and application thereof
  • Mixed ligand cobalt (II) coordination polymer magnetic material, preparation method and application thereof
  • Mixed ligand cobalt (II) coordination polymer magnetic material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Synthesis of 5-methyl-1H-tetrazolium and 2,3-pyrazinedicarboxylic acid mixed ligand cobalt(II) complex A:

[0028] Dissolve 5-methyl-1H-tetrazole (0.2 mmol, 16.8 mg), 2,3-pyrazinedicarboxylic acid (0.1 mmol, 16.8 mg) and cobalt acetate tetrahydrate (0.2 mmol, 49.8 mg) In double-distilled water (10.0 mL), adjust the pH to 4 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. at 180 o After incubation at C for 4 days, the temperature was programmed to cool down to room temperature to obtain a red bulky single crystal, which was then washed with twice distilled water and dried in air. See figure 1 crystal structure diagram.

Embodiment 2

[0030] Synthesis of 5-methyl-1H-tetrazolium and 2,3-pyrazinedicarboxylic acid mixed ligand cobalt(II) complex B:

[0031] Dissolve 5-methyl-1H-tetrazole (0.2 mmol, 16.8 mg), 2,3-pyrazinedicarboxylic acid (0.1 mmol, 16.8 mg) and cobalt acetate tetrahydrate (0.2 mmol, 49.8 mg) In double-distilled water (10.0 mL), adjust the pH to 5 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. at 180 o After incubation at C for 4 days, the temperature was programmed to cool down to room temperature to obtain a red bulky single crystal, which was then washed with twice distilled water and dried in air. See figure 1 crystal structure diagram.

Embodiment 3

[0033] Synthesis of 5-methyl-1H-tetrazolium and 2,3-pyrazinedicarboxylic acid mixed ligand cobalt(II) complex C:

[0034] Dissolve 5-methyl-1H-tetrazole (0.2 mmol, 16.8 mg), 2,3-pyrazinedicarboxylic acid (0.1 mmol, 16.8 mg) and cobalt acetate tetrahydrate (0.2 mmol, 49.8 mg) In double-distilled water (15.0 mL), adjust the pH to 4 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. at 170 o After incubation at C for 4 days, the temperature was programmed to cool down to room temperature to obtain a red bulky single crystal, which was then washed with twice distilled water 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 2,3-pyrazinedicarboxylic formic acid mixed ligand cobalt (II) coordination polymer magnetic material, a preparation method and an application thereof. The three-dimensional coordination polymer magnetic material is shown as the chemical formula [Co2(u3-OH)(mtz)(Pyzdc)], wherein the mtz is a 5-methyl-triazole negative monovalent anion; and the Pyzdc is a 2,3-pyrazine dicarboxylic acid negative dianion. The mixed ligand cobalt (II) coordination polymer magnetic material is prepared by a hydrothermal method, thereby having the advantages of high yield and good reproducibility. The mixed ligand cobalt (II) coordination polymer magnetic material is a cobalt (II) compound containing the mixed ligand of 5-methyl-1H-tetrazole and 2,3-pyrazinedicarboxylic formic acid. An obvious varying magnetic behavior occurs to the coordination polymer magnetic material at low temperature. The mixed ligand cobalt (II) coordination polymer magnetic material can be widely used in the field of materials science as a molecular magnetic sensor.

Description

[0001] This patent application was 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 preparation method and application of high-dimensional cobalt magnetic materials containing 5-methyl-1H-tetrazolium ligands. Bit polymers are cobalt(II) complexes containing both 5-methyl-1H-tetrazolium and 2,3-pyrazinedicarboxylic acid mixed ligands, whose magnetic properties make them useful as molecular-based magnets in materials science field is applied. Background technique [0003] In recent years, the design and synthesis of molecular-based functional materials with high-dimensional ordered spatial structure and excellent physical and chemical properties ha...

Claims

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Application Information

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