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Mixed ligand cobalt (ii) complex and its preparation method and application

A technology of mixing ligands and complexes, applied in the direction of cobalt organic compounds, the size/direction of the magnetic field, etc., can solve problems such as limited, and achieve the effects of good solubility, high thermal stability and high yield

Inactive Publication Date: 2011-12-14
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, so far, the research on paramagnetic metal complexes with 1,2,4-triazole and 5-sulfoisophthalic acid as mixed ligands is still very limited, and related research is expected to provide new molecular-based magnetic materials. explore new paths

Method used

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  • Mixed ligand cobalt (ii) complex and its preparation method and application
  • Mixed ligand cobalt (ii) complex and its preparation method and application
  • Mixed ligand cobalt (ii) complex and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Synthesis of 1,2,4-triazole and 5-sulfoisophthalic acid mixed ligand cobalt(II) complex A:

[0037] 1,2,4-triazole (0.2 mmol, 14.0 mg), m-benzene two Formic acid-5-sodium sulfonate (0.1 mmol, 27.0 mg) and cobalt nitrate hexahydrate (0.1 mmol, 29.0 mg) were dissolved in a mixed solution of twice distilled water (6.0 mL) and methanol (4.0 mL), and washed with three Ethylamine was used to adjust the pH to 6, and after stirring for a few minutes, it was sealed in a hydrothermal kettle. After incubating at 170° C. for 3 days, the temperature was programmed to cool down to room temperature to obtain a purple-red bulk single crystal, which was then washed with ethanol and dried in air. See figure 1 3D structure diagram.

Embodiment 2

[0039] Synthesis of 1,2,4-triazole and 5-sulfoisophthalic acid mixed ligand cobalt(II) complex B:

[0040] 1,2,4-Triazole (0.2 mmol, 14.0 mg), sodium 5-sulfoisophthalate (0.1 mmol, 27.0 mg) and cobalt nitrate hexahydrate (0.15 mmol, 44.0 mg) were dissolved In a mixed solution of double-distilled water (5.0 mL) and methanol (5.0 mL), adjust the pH to 7 with triethylamine, stir for several minutes, and seal it into a hydrothermal kettle. After being incubated at 165°C for 3 days, the temperature was programmed to cool down to room temperature to obtain a pink blocky single crystal, which was then washed with ethanol and dried, see figure 1 3D structure diagram.

Embodiment 3

[0042] Synthesis of 1,2,4-triazole and 5-sulfoisophthalic acid mixed ligand cobalt(II) complex C:

[0043] 1,2,4-triazole (0.2 mmol, 14.0 mg), m-benzene two Formic acid-5-sodium sulfonate (0.1 mmol, 27.0 mg) and cobalt nitrate hexahydrate (0.15 mmol, 44.0 mg) were dissolved in a mixed solution of twice distilled water (6.0 mL) and ethanol (4.0 mL), and washed with three Ethylamine was used to adjust the pH to 7, and after stirring for a few minutes, it was sealed in a hydrothermal kettle. After incubating at 160° C. for 3 days, the temperature was programmed to cool down to room temperature to obtain a pink bulk single crystal, which was then washed with ethanol and dried. See figure 1 3D structure diagram.

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Abstract

The invention relates to a 1,2,4-triazole and 5-sulfonyl m-phthalic acid mixed ligand cobalt (II) coordination compound magnetic material as well as a preparation method and application thereof. The chemical formula of the coordination compound magnetic material is {[Co3.5(H2O)2(trz)4(sip)].1.5H2O}, wherein trz is 1,2,4-triazole monovalent anion; and sip is trivalent anion of 5-sulfonyl m-phthalic acid. The coordination compound magnetic material is prepared by using a solvothermal method and has higher yield and good repeatability. The coordination compound magnetic material is the first case of cobalt (II) compound containing the 1,2,4-triazole and 5-sulfonyl m-phthalic acid mixed ligand, shows a magnetic transition phenomenon induced by a three-step field under different external magnetic fields, can be used as a molecule-based magnetic material and has great application value in the field of material science.

Description

[0001] This patent application was supported by the National Natural Science Foundation of China (funding numbers: 20871092 and 20973125), the New Century Excellent Talents of the Ministry of Education (NCET-08-0914) and the Tianjin Natural Science Foundation (funding numbers: 10JCZDJC21600 and 10JCYBJC04800). technical field [0002] The invention relates to the technical field of metal-organic complexes and their molecular-based magnetic materials, especially the preparation method and application of three-dimensional magnetic materials containing 1,2,4-triazole ligands. The compound is the first one containing 1 , 2,4-triazole and 5-sulfoisophthalic acid mixed ligand cobalt (II) complex, its magnetic properties make it possible to be used as a molecular-based magnetic material in the field of material science. Background technique [0003] In recent years, the design and synthesis of molecular-based materials with high-dimensional ordered spatial structure and excellent ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/06G01R33/02
Inventor 赵小军杨恩翠刘忠义丁波
Owner TIANJIN NORMAL UNIVERSITY
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