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Binuclear metal organic complex based on nickel (II) and preparation method thereof

A technology of organic complexes and binuclear metals, applied in the field of nickel-based binuclear metal-organic complexes and their preparation, can solve the problem of less transition metal organic complexes, achieve no need for inert gas protection, wide sources, good antiferromagnetism effect of nature

Inactive Publication Date: 2017-03-08
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, there have been few studies on the construction of new transition metal-organic complexes based on furan-2,5-dicarboxylic acid and bipyridine. Sen et al. reported a metal-organic complex with a 1D+1D→2D network structure [6] , Li et al. obtained a three-dimensional metal-organic complex [7]
However, transition metal organic complexes synthesized using furan-2,5-dicarboxylic acid and 3,3'-dimethyl-4,4'-bipyridine have not been reported yet.

Method used

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  • Binuclear metal organic complex based on nickel (II) and preparation method thereof
  • Binuclear metal organic complex based on nickel (II) and preparation method thereof
  • Binuclear metal organic complex based on nickel (II) and preparation method thereof

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Experimental program
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Embodiment 1

[0032] 1. Preparation of nickel(II)-based binuclear metal-organic complexes

[0033] The preparation method comprises the following steps:

[0034] (1) Dissolving and dispersing 0.25mmol (0.039mg) of furan-2,5-dicarboxylic acid in water, and using NaOH (0.016g, 0.4mmol) solution to adjust the pH value to 7.0-8.0 to obtain a ligand solution;

[0035] (2) Add an equimolar amount of Ni(NO 3 ) 2 ·6H 2 O (0.073g; 0.25mmol) and 3,3'-dimethyl-4,4'-bipyridine (0.046g; 0.25mmol);

[0036] (3) Add the mixed solution into a 23mL polytetrafluoroethylene reactor, keep it under autogenous pressure at 130°C for 72 hours, and then lower it to room temperature at a rate of 5°C / h;

[0037] (4) The mixture in step 3 was filtered, and the crystals were collected, washed with absolute ethanol and dried to obtain green crystals (tested yield: 43%).

[0038] 2. Identification of Ni(II)-based binuclear metal-organic complexes

[0039] Through the following elemental analysis, IR spectrum and X-...

Embodiment 2

[0050] This embodiment adopts the temperature-varying magnetic susceptibility of the binuclear metal-organic complex based on nickel (II) obtained in embodiment 1. The specific research methods are as follows:

[0051] (1) Applied magnetic field according to the present invention: 1kOe.

[0052] (2) The temperature range of variable temperature magnetic susceptibility: 300K-2K.

[0053] (3) Experimental results

[0054] Temperature-varying magnetic susceptibility results (eg Figure 4 ) shows that the metal-organic complex based on nickel (II) of the present invention shows antiferromagnetism in the range of 300K-2K.

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Abstract

The invention relates to a binuclear metal organic complex based on nickel (II), the binuclear metal organic complex is a nickel metal organic complex with a repeating unit of [Ni2 (fdc) 2 (bipy) 2 (H2O)4].(H2O) 2, fdc in the [Ni2 (fdc) 2 (bipy) 2 (H2O)4].(H2O) 2 is furan-2, 5-dicarboxylic acid, and dmbpy is 3, 3 '-dimethyl-4, 4 '-dipyridine; the binuclear metal organic complex based on nickel (II) has good antiferromagnetism.

Description

technical field [0001] The invention relates to a metal-organic complex, in particular to a nickel (II)-based binuclear metal-organic complex and a preparation method thereof. Background technique [0002] In recent years, the design and synthesis of molecular-based functional materials with high-dimensional ordered spatial structures and excellent physical and chemical properties have attracted great interest. Metal complex molecule-based magnets are the most widely and deeply studied class, and their spin carriers are paramagnetic metal ions. Proper molecular assembly from these high-spin complexes can lead to the formation of polynuclear, one-, two-, and three-dimensional molecular-based magnets. [0003] Metal-organic complexes are a new type of functional material, which are synthesized by self-assembly of metal ions and organic ligands under certain conditions. Due to its unique skeleton structure and controllable pore size, it is widely used in gas adsorption, photo...

Claims

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Application Information

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IPC IPC(8): C07F15/00H01F1/00
CPCC07B2200/13C07F15/045H01F1/0009
Inventor 马德运覃亮郭海福雷佳眉温美玲蔡立文
Owner ZHAOQING UNIV
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