Dy (III)-Ni (II) mixed-metal magnetic complex constructed by mixed ligand as well as preparation method and application of complex

A technology of mixed ligands and complexes, applied in the fields of magnetism and organic chemistry of organic materials/organic magnetic materials, can solve problems such as limited research, achieve good reproducibility, high thermal stability, phase purity, and high yield Effect

Inactive Publication Date: 2014-10-15
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the study of rare earth-transition metal magnetic complexes with rigid phenyl aro

Method used

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  • Dy (III)-Ni (II) mixed-metal magnetic complex constructed by mixed ligand as well as preparation method and application of complex
  • Dy (III)-Ni (II) mixed-metal magnetic complex constructed by mixed ligand as well as preparation method and application of complex
  • Dy (III)-Ni (II) mixed-metal magnetic complex constructed by mixed ligand as well as preparation method and application of complex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Dy(III)-Ni(II) mixed-metal magnetic complexes based on o-phenanthroline and m-nitrobenzoic acid as mixed ligands A Synthesis:

[0028] O-phenanthroline (0.1 mmol, 19.8 mg), m-nitrobenzoic acid (0.3 mmol, 50.1 mg), nickel nitrate hexahydrate (0.1 mmol, 29.1 mg) and dysprosium nitrate hexahydrate (0.2 mmol, 91.3 mg) was dissolved in double-distilled water (8.0 mL), adjusted to pH 5 with NaOH, stirred for several minutes, and sealed in a hydrothermal kettle. After incubation at 160°C for four days, at 3.0°C·h –1 The rate program cooled down to room temperature to obtain green blocky crystals, which were then washed with twice distilled water and dried in air.

Embodiment 2

[0030] Dy(III)-Ni(II) mixed-metal magnetic complexes based on o-phenanthroline and benzoic acid as mixed ligands B Synthesis:

[0031] O-phenanthroline (0.1 mmol, 19.8 mg), benzoic acid (0.3 mmol, 36.6 mg), nickel nitrate hexahydrate (0.1 mmol, 29.1 mg) and dysprosium nitrate hexahydrate (0.2 mmol, 91.3 mg) Dissolve in twice distilled water (8.0 mL), adjust the pH to 5 with NaOH, stir for several minutes, and seal it into a hydrothermal kettle. After incubation at 170°C for four days, at 3.0°C·h –1 The rate program cooled down to room temperature to obtain green blocky crystals, which were then washed with twice distilled water and dried in air.

Embodiment 3

[0033] Dy(III)-Ni(II) mixed-metal magnetic complexes based on 2,2′-bipyridine and benzoic acid as mixed ligands C Synthesis:

[0034] 2,2′-bipyridine (0.1 mmol, 15.6 mg), benzoic acid (0.2 mmol, 24.4 mg), nickel nitrate hexahydrate (0.1 mmol, 29.1 mg) and dysprosium nitrate hexahydrate (0.2 mmol, 91.3 mg) was dissolved in double distilled water (10.0 mL), adjusted to pH 6 with NaOH, stirred for several minutes, and sealed into a hydrothermal kettle. After incubation at 170°C for four days, at 3.0°C·h –1 The rate program cooled down to room temperature to obtain green blocky crystals, which were then washed with twice distilled water and dried in air.

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Abstract

The invention relates to a Dy (III)-Ni (II) mixed-metal magnetic complex constructed by mixed ligand as well as a preparation method and an application of the complex. A chemical formula of the complex is [DyNi (L1) (L2)5], wherein L1 represents phenanthroline or 2, 2'-dipyridyl, and L2 represents monovalent anion of phenyl aromatic monobasic acid. The complex is prepared by adopting a hydrothermal method, and has higher yield and good reproducibility; the magnetic complex material is the first case of the Dy (III)-Ni (II) mixed-metal magnetic complex containing phenyl aromatic monobasic acid and nitrogen heterocyclic neutral ligand, and the alternating current magnetic susceptibility of the complex has an obvious frequency dependence phenomenon, namely slow-relaxation magnetic behavior, in the low-temperature area; and accordingly, the complex can be taken as a molecular magnetic material and has a huge application value in the aspects of high-density information storage equipment and the like.

Description

[0001] Statement Regarding Funding Research or Development [0002] The application for this invention has been funded by the National Natural Science Foundation of China (fund numbers: 21171129 and 21173157) and the Tianjin Higher Education Science and Technology Development Fund Project (fund number: 2012ZD01). technical field [0003] The invention relates to the technical field of metal-organic coordination compounds and their molecular-based magnetic materials, in particular to Dy(III)-Ni(II) mixed metal magnetic complexes constructed from phenyl aromatic monobasic acids and nitrogen heterocyclic neutral ligands And its preparation method and application. The complex is the first Dy(III)-Ni(II) mixed metal complex containing phenyl aromatic monocarboxylic acid and nitrogen heterocyclic neutral ligand, and its unique magnetic properties make it possible to act as a molecular Base magnetic materials have been applied in the field of materials science. Background techniqu...

Claims

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Application Information

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IPC IPC(8): C07F19/00H01F1/42
Inventor 杨恩翠赵小军李言董慧明
Owner TIANJIN NORMAL UNIVERSITY
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