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Magnetic cobalt (II) complex based on 4,4'-bipyridine-itaconic acid derivative ligand and preparation method of magnetic cobalt (II) complex

A technology of bipyridine and itaconic acid, which is applied in the fields of magnetism and organic chemistry of organic materials/organic magnetic materials, can solve the problems of in-depth research and establishment of related laws, and achieve good stability, wide application range and application foreground effect

Active Publication Date: 2018-11-02
SHANGQIU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[Chem. Commun. 2014, 50, 1906−1908; J. Am. Chem. Soc. 2014, 136, 4484−4487; Inorg. Chem. 2016, 55, 5578−5584] In recent years, research on molecular magnet materials Some progress has been made, but the relevant research is still in its infancy, and there are problems such as in-depth research and no establishment of relevant laws, and there is still a certain distance from practical application

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  • Magnetic cobalt (II) complex based on 4,4'-bipyridine-itaconic acid derivative ligand and preparation method of magnetic cobalt (II) complex
  • Magnetic cobalt (II) complex based on 4,4'-bipyridine-itaconic acid derivative ligand and preparation method of magnetic cobalt (II) complex
  • Magnetic cobalt (II) complex based on 4,4'-bipyridine-itaconic acid derivative ligand and preparation method of magnetic cobalt (II) complex

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Effect test

Embodiment 1

[0022] The preparation method of the magnetic cobalt (II) complex based on the 4,4'-bipyridyl-itaconic acid derivative ligand of this example is as follows:

[0023] 1200 microliters of 0.5mol / L Co(NO 3 ) 2 800 microliters of 0.5mol / L itaconic acid aqueous solution and 400 microliters of 4,4'-bipyridyl 0.5mol / L ethanol solution were placed in a 15 mL vial, and then 6 mL of deionized water was added to the While stirring, add 1 mol / L sodium hydroxide aqueous solution drop by drop to adjust the pH to 3.0, stir for 10 minutes, seal, then place in a constant temperature drying oven at 90°C for 24 hours, cool to room temperature, and obtain a large amount of red The crystals were filtered, washed three times with water, and dried at room temperature to obtain a cobalt (II) complex with a yield of 0.136 g and a yield of 85.9%.

[0024] (1) The obtained crystal samples were characterized by a Bruker D8 ADVANCE powder X-ray diffractometer, and the peak positions of the obtained meas...

Embodiment 2

[0032] The preparation method of the magnetic cobalt (II) complex based on the 4,4'-bipyridyl-itaconic acid derivative ligand of this embodiment, the steps are as follows:

[0033] 640 microliters of 0.5mol / L Co(NO 3 ) 2 400 microliters of 0.5mol / L itaconic acid aqueous solution and 200 microliters of 4,4'-bipyridyl 0.5mol / L ethanol solution were placed in a 15 mL vial, and then 5 mL of deionized water was added to the While stirring, add 1 mol / L aqueous sodium hydroxide solution dropwise to adjust the pH to 2.8, stir for 8 minutes, seal, then place in a constant temperature drying oven at 90°C for 30 hours, cool to room temperature, and obtain a large amount of red The crystals were filtered, washed three times with water, and dried at room temperature to obtain a cobalt (II) complex.

Embodiment 3

[0035] The preparation method of the magnetic cobalt (II) complex based on the 4,4'-bipyridyl-itaconic acid derivative ligand of this embodiment, the steps are as follows:

[0036] 840 microliters of 0.5mol / L Co(NO 3 ) 2 Aqueous solution of 600 microliters of 0.5mol / L itaconic acid and 300 microliters of 0.5mol / L ethanol solution of 4,4'-bipyridine were placed in a 15 mL vial, then 3 mL of deionized water was added, and the While stirring, add 1 mol / L sodium hydroxide aqueous solution drop by drop to adjust the pH to 3.0, stir for 5 minutes, seal, then place in a constant temperature drying oven at 90°C for 35 hours, and cool to room temperature to obtain a large amount of red The crystals were filtered, washed three times with water, and dried at room temperature to obtain a cobalt (II) complex.

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Abstract

The invention discloses a magnetic cobalt (II) complex based on a 4,4'-bipyridine-itaconic acid derivative ligand and a preparation method of the magnetic cobalt (II) complex. The molecular formula ofthe magnetic cobalt (II) complex is [[Co(HL)2(H2O)2].2NO3]n, wherein HL represents the 4,4'-bipyridine-itaconic acid derivative ligand with one hydrogen atom removed from carboxylic acid, a single-crystal structure has a one-dimensional chain structure, and an asymmetric construction unit of the single-crystal structure contains half cobalt (II) ion, one 4,4'-bipyridine-itaconic acid derivative ligand, one end coordination water molecule and one free nitrate anion; pyridine nitrogen in 4,4'-bipyridineis subjected to an electrophilic addition reaction with double bonds in itaconic acid, a semi-rigid carboxylate ligand containing N(+)-C bonds is synthesized, and the ligand and the cobalt (II) ion are subjected to an in-situ coordination reaction, and the cobalt (II) complex is synthesized;the cobalt (II) complex has slow magnetic relaxation phenomenon at the low temperature and serves as a molecule-based magnetic material to be applied to the fields of information storage, quantum computation and the like.

Description

technical field [0001] The invention relates to a magnetic cobalt (II) complex based on a 4,4'-bipyridine-itaconic acid derivative ligand and its preparation method, and its application in the fields of information storage, quantum computing, etc., belonging to molecular-based magnetic field of materials technology. Background technique [0002] Molecular-based magnetic materials are a class of magnetic compounds formed by chemically combining free radicals or paramagnetic ions (including transition metal ions and rare earth metal ions) and diamagnetic ligands in a spontaneous or controlled manner. With the continuous development of material science, molecular-based magnetic materials as a new type of soft material quickly become a very important part of this research field due to their unique properties. An emerging field of science that physicists and biologists take very seriously. Compared with traditional magnets, molecular-based magnetic materials have the advantages...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/04H01F1/42
CPCC07D213/04H01F1/42
Inventor 李忠义赵兵翟滨吴冬青邵梅玲
Owner SHANGQIU NORMAL UNIVERSITY
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