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A kind of octanuclear nickel metal complex and preparation method thereof

A technology of metal complexes and metal salts, applied in nickel organic compounds, chemical instruments and methods, compounds containing elements of Group 8/9/10/18 of the periodic table, etc. problems such as poor controllability and complex reaction, to achieve the effect of high yield, good reproducibility and simple process

Inactive Publication Date: 2015-12-09
TECHN CENT FOR SAFETY OF INDAL PRODS TIANJIN ENTRY EXIT INSPECTION QUARANTINE BUREAU
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Problems solved by technology

[0005] The commonly used preparation method of pyrazole ligand nickel metal complexes reported in the literature at present adopts the synthesis method of reflux reaction under nitrogen protection, and then volatilizes the solvent to obtain crystals. This method has complex reactions and easy oxidation of ferrous iron. , low yield and poor controllability and other technical defects

Method used

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  • A kind of octanuclear nickel metal complex and preparation method thereof
  • A kind of octanuclear nickel metal complex and preparation method thereof
  • A kind of octanuclear nickel metal complex and preparation method thereof

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Embodiment 1

[0020] A preparation method of the pyrazole ligand nickel metal complex, the steps are as follows:

[0021] 1) At room temperature, the ligand pyrazole (0.5mmol), metal salt NiSO 4 ?6H 2 O (1mmol), LiOH (0.5mmol) were mixed in 10mL methanol solution, and after stirring, a mixed suspension solution was obtained;

[0022] 2) At room temperature, seal the above mixed suspension in a stainless steel solvothermal reaction kettle with a polytetrafluoroethylene lining, and place the reaction kettle in an oven;

[0023] 3) The oven temperature is raised to 160 within 4 hours o C, and at 160 o C under constant temperature for 24 hours, then slowly cool down to room temperature within 12 hours;

[0024] 4) Open the reaction kettle at room temperature to obtain green crystals which are nickel metal complexes of pyrazole ligands.

Embodiment 2

[0026] A preparation method of the pyrazole ligand nickel metal complex, the steps are as follows:

[0027] 1) At room temperature, the ligand pyrazole (0.5mmol), metal salt NiSO 4 ?6H 2 O (1mmol), LiOH (0.5mmol) were mixed in 10mL ethanol solution, and after stirring, a mixed suspension solution was obtained;

[0028] 2) At room temperature, seal the above mixed suspension in a stainless steel solvothermal reaction kettle with a polytetrafluoroethylene lining, and place the reaction kettle in an oven;

[0029] 3) The oven temperature is raised to 160 within 4 hours o C, and at 160 o C under constant temperature for 24 hours, then slowly cool down to room temperature within 12 hours;

[0030] 4) Open the reaction kettle at room temperature to obtain green crystals which are nickel metal complexes of pyrazole ligands.

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Abstract

An octanuclear nickel metal complex and a preparation method thereof. A kind of pyrazole ligand nickel metal complex, chemical formula is Ni8 L 12(H2O)2, in the chemical formula L It is pyrazole, and its preparation method is to mix the ligand and the metal salt to form a suspension at normal temperature, and then heat the suspension through a hydrothermal reactor for reaction. The advantages of the present invention: the preparation method is synthesized under solvothermal conditions, the process is simple, the yield is high, and the reproducibility is good; the complex can produce molecular magnetic phenomena, and can be used as a magnetic material in information storage, molecular switches, and electromagnetic imaging. With the continuous progress and rapid development of high-density information storage devices, it can be expected that it will not only provide development opportunities for molecular engineering and molecular synthesis, but also play a significant role in improving energy efficiency and reducing manufacturing costs. meaning.

Description

technical field [0001] The invention relates to the field of molecular magnetic materials, in particular to a pyrazole ligand nickel metal complex and a preparation method thereof. Background technique [0002] Molecular-based nanomagnets refer to superparamagnetic magnets that exhibit quantum size effects, mainly including single-molecule magnets (nanoscale clusters), single-chain magnets (nanoscale chains) and single-ion magnets (single-ion 3D or rare earth metal complexes). These molecular-based nanomagnets not only exhibit the quantum tunneling effect and slow magnetic relaxation phenomenon of superparamagnetic magnets, but more importantly, they are all synthesized by chemical methods, and have good controllability and uniform size. And other characteristics, have been greatly concerned by chemists and physicists. In addition, from an application point of view, molecular-based nanomagnets enable information storage at the molecular level due to their unique magnetic p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F15/04H01F1/42
CPCC07F15/045H01F1/42Y02P20/10
Inventor 张晓红杨磊李涛刘凤娟
Owner TECHN CENT FOR SAFETY OF INDAL PRODS TIANJIN ENTRY EXIT INSPECTION QUARANTINE BUREAU
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