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Manganese (II) complex containing 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand and preparation method and application of manganese (II) complex

A technology of nitroisophthalic acid and mixed ligands, which is applied in the field of preparation of three-dimensional magnetic materials containing 2-pyridine ligands, can solve the problems of less magnetic research and achieve good reproducibility, small size, and high thermal stability Effect

Inactive Publication Date: 2013-11-06
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, so far, 2-(1H-tetrazolium-5-methyl ) The research on pyridine ligand metal complexes is still very limited (Xu, G.-H.; Tian, ​​H.; Pan, K.-J.; Ye, Q.J.Coord.Chem.2009, 62, 2457-2464 ; Wang, W.; ActaCryst., 2008, E64, m999), especially paramagnetic compounds with 2-(1H-tetrazolium-5-methyl)pyridine as the main ligand and aromatic organic dibasic acids as co-ligands There is even less research on metal complexes and their magnetic properties, and related research is expected to open up a new path for the exploration of new molecular-based magnetic materials

Method used

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  • Manganese (II) complex containing 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand and preparation method and application of manganese (II) complex
  • Manganese (II) complex containing 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand and preparation method and application of manganese (II) complex
  • Manganese (II) complex containing 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand and preparation method and application of manganese (II) complex

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Experimental program
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Effect test

Embodiment 1

[0026] Synthesis of 2-(1H-tetrazole-5-methyl)pyridine and 5-nitroisophthalic acid mixed ligand manganese(II) complex A:

[0027] 2-ethylcyanopyridine (0.15 mmol, 17.7 mg), sodium azide (0.3 mmol, 19.5 mg), 5-nitroisophthalic acid (0.2 mmol, 42.0 mg), manganese acetate tetrahydrate (0.2 mmol, 49.0 mg) and manganese chloride tetrahydrate (0.1 mmol, 19.8 mg) were dissolved in a mixed solution of twice distilled water (6.0 mL) and ethanol (4.0 mL), and the pH was adjusted to 6 with triethylamine , Stir for a few minutes and seal it into a water-heated kettle. After being kept at 160° C. for 3 days, the temperature was programmed to cool down to room temperature to obtain an orange blocky single crystal, which was then washed with methanol and dried in air.

Embodiment 2

[0029] Synthesis of 2-(1H-tetrazole-5-methyl)pyridine and 5-nitroisophthalic acid mixed ligand manganese(II) complex B:

[0030] 2-ethylcyanopyridine (0.15 mmol, 17.7 mg), sodium azide (0.3 mmol, 19.5 mg), 5-nitroisophthalic acid (0.2 mmol, 42.0 mg), manganese acetate tetrahydrate (0.1 mmol, 24.5 mg) and manganese chloride tetrahydrate (0.1 mmol, 19.8 mg) were dissolved in a mixed solution of twice distilled water (8.0 mL) and ethanol (2.0 mL), and the pH was adjusted to 5 with triethylamine , Stir for a few minutes and seal it into a water-heated kettle. After incubating at 160° C. for 3 days, the temperature was programmed to cool down to room temperature to obtain an orange blocky single crystal, which was then washed with methanol and dried.

Embodiment 3

[0032] Synthesis of 2-(1H-tetrazole-5-methyl)pyridine and 5-nitroisophthalic acid mixed ligand manganese(II) complex C:

[0033] 2-ethylcyanopyridine (0.1 mmol, 11.8 mg), sodium azide (0.3 mmol, 19.5 mg), 5-nitroisophthalic acid (0.2 mmol, 42.0 mg), manganese acetate tetrahydrate (0.1 mmol, 24.5 mg) and manganese chloride tetrahydrate (0.1 mmol, 19.8 mg) were dissolved in a mixed solution of twice distilled water (6.0 mL) and methanol (4.0 mL), and the pH was adjusted to 5 with triethylamine , Stir for a few minutes and seal it into a water-heated kettle. After incubating at 150° C. for 3 days, the temperature was programmed to cool down to room temperature to obtain a light yellow bulk single crystal, which was then washed with methanol and dried.

[0034] The structural characterization of the (Example 1-3, A-C) complex magnetic material prepared by the present invention is as follows:

[0035] (1) Determination of crystal structure ( figure 1 )

[0036] Select a single ...

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Abstract

The invention relates to a manganese (II) complex magnetic material containing a 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand and a preparation method and application of the manganese (II) complex magnetic material. A chemical formula of the complex magnetic material is [Mn3(py)2(nip)2], wherein py represents a single valence anion of 2-(1H-tetrazole-5-methyl) pyridine; and nip represents a dianion of 5-nitroisophthalic acid. The complex magnetic material is prepared by a solvent thermal method, has high yield and good repeatability, is a first manganese (II) compound containing the 2-(1H-tetrazole-5-methyl) pyridine and 5-nitroisophthalic acid mixed ligand, shows magnetic phenomena of recessive spin canting, metamagnetic transition and spin-floptransition in different external magnetic fields, can be used as a molecular-based magnetic material and has high application value in the field of material science.

Description

technical field [0001] The present invention relates to the technical field of metal-organic complexes and molecular-based magnetic materials thereof, in particular to the preparation method and application of three-dimensional magnetic materials containing 2-(1H-tetrazolium-5-methyl)pyridine ligands. The compound is The first manganese(II) complex containing both 2-(1H-tetrazole-5-methyl)pyridine and 5-nitroisophthalic acid ligands, whose magnetic properties allow it to be used as a molecular-based magnetic material Applied in the field of materials science. Background technique [0002] In recent years, the design and synthesis of molecular-based materials with high-dimensional ordered spatial structure and excellent physical and chemical properties have attracted great interest (You Xiaozeng, Molecular Materials-Photoelectric Functional Compounds, Shanghai Science and Technology Press, 2001; Zhu Daoben, Functional Progress in Materials Chemistry, Chemical Industry Press,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F13/00H01F1/42
Inventor 杨恩翠赵小军李娅玲刘忠义
Owner TIANJIN NORMAL UNIVERSITY
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