Nickel-coordination polymer and preparation method thereof
A technology of coordination polymers and polytetrafluoroethylene tubes, which is applied to the magnetism of nickel organic compounds, organic materials/organic magnetic materials, etc., can solve the problems of difficult precision machining, large magnetic loss, and high density, and achieve high heat The effects of stability, high yield and high sample purity
Inactive Publication Date: 2014-06-04
SHANXI UNIV
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Problems solved by technology
Traditional magnetic materials have been greatly restricted in high-tech and cutting-edge technology applications due to high-temperature smelting, high density, difficulty in precision machining, and large magnetic loss.
Method used
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Embodiment 1
[0018] Example 1. 0.1 mmol H 4 BPTC, 0.2 mmol of 1,4-bib and 0.2 mmol of Ni(NO 3 ) 2 ·6H 2 Mix and dissolve O in 7mL water, adjust the pH to 6.5, place in a 13ml polytetrafluoroethylene tube, stir at room temperature for 30min, seal the polytetrafluoroethylene tube in a stainless steel reaction kettle, crystallize at 160°C for 72h, and cool naturally After reaching room temperature, light blue granular crystals were precipitated, washed with distilled water, and then vacuum pumped to collect the product. The yield was 78.2%.
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The invention relates to a nickel-coordination polymer and a preparation method thereof. molecular formula of the complex is represented as {[Ni2(BPTC) (1,4-bib)2(H2O)]2}}n, wherein H4BPTC is 3,4,3',4'-biphenyl tetracarboxylic acid and 1,4-bib is 1,4-bisimidazolyl benzene. The preparation method of the complex comprises the steps of mixing the H4BPTC, the 1,4-bib and Ni(NO3)2.6H2O in water at a certain proportion, regulating pH value to 6.5, adding a mixing liquid in a 13ml polytetrafluoroethylene tube, stirring for 30min at room temperature, sealing the polytetrafluoroethylene tube in a stainless steel reaction kettle, crystallizing for 72 hours at 160 DEG C, naturally cooling to room temperature to separate out light blue granular crystals, washing the crystals through distilled water and pumping the crystals through a vacuum pump, wherein yield is above 78%. The complex, through nickel dimer units in the structure and weak ferromagnetic action between dimer metallic nickel ions, can serve as a molecular magnetic material.
Description
technical field [0001] The present invention relates to nickel complexes, in particular to a nickel coordination polymer, in particular to a nickel (II) ion, 3,4,3',4'-biphenyltetracarboxylic acid and 1,4-diimidazole Benzene-structured nickel coordination polymer with weak ferromagnetic interaction and its preparation method. Background technique [0002] Molecular magnetic materials are not only a new type of functional material, but also a new field involving chemistry, physics, material science and life science. Due to the high temperature smelting of traditional magnetic materials, high density, difficulty in precision machining and large magnetic loss, etc., the application of high-tech and cutting-edge technology has been greatly restricted. Compared with traditional magnetic materials, molecular magnets can be prepared by low-temperature synthesis and processing methods due to their variety of structures, comprehensive properties that can be combined with machinery, ...
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Login to View More IPC IPC(8): C07F15/04H01F1/42
Inventor 苏峰卢丽萍冯思思朱苗力
Owner SHANXI UNIV
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