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Metal organic complex based on binuclear cobalt (II) and preparation method thereof

A technology of metal-organic complexes, applied in the field of binuclear cobalt-based metal-organic complexes and their preparation, to achieve the effects of wide sources, mild reaction conditions, and easy access

Inactive Publication Date: 2020-05-15
ZHAOQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the formation of coordination compounds based on the transition metal cobalt and 5-ethoxyisophthalic acid.

Method used

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  • Metal organic complex based on binuclear cobalt (II) and preparation method thereof
  • Metal organic complex based on binuclear cobalt (II) and preparation method thereof
  • Metal organic complex based on binuclear cobalt (II) and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A metal-organic complex based on dinuclear cobalt (II), the preparation method of which comprises the following steps:

[0024] (1) Add an equimolar amount of Co(NO 3 ) 2 ·6H 2 O (0.145g, 0.5mmol), H 2 EIA (0.105g, 0.5mmol), bpy (0.078g, 0.5mmol) was added to 12mL mixed solvent (6mL distilled water + 6mL ethanol), then stirred for 20min;

[0025] (2) Add the substance in step (1) into a 23mL polytetrafluoroethylene reactor, keep 130°C for 72 hours at a constant temperature under autogenous pressure, and then drop to room temperature at a rate of 5°C / h;

[0026] (3) The mixture in step (2) was filtered to collect crystals, washed with ethanol and water solvent and dried to obtain purple crystals.

[0027] According to H 2 EIA calculation gave a yield of 45%.

experiment example

[0029] It was identified by elemental analysis, IR spectrum and X-ray single crystal diffraction analysis.

[0030] (1) Elemental analysis

[0031] C 20 h 18 o 6 N 2 Co; Theoretical: C, 54.39; H, 4.08; N, 6.34; Found: C, 54.60; H, 3.85;

[0032] (2) Infrared spectrum (KBrpellet)

[0033] The spectral data are 3575(s), 3068(w), 3001(w), 2960(w), 2881(w), 1607(s), 1582(s), 1541(s), 1458(m), 1392( vs), 1320(s), 1258(s), 1204(m), 1109(s), 1046(s), 996(w), 938(w), 876(m), 817(s), 780( s),717(s),638(s),584(w),513(w),468(m),413(w)cm -1 .

[0034] (3) X-ray single crystal diffraction

[0035] The crystallographic parameters and some bond lengths are shown in Table 1 and Table 2. X-ray single crystal diffraction results show that the repeating unit in the cobalt (II) metal-organic complex is an asymmetric unit, and its repeating structural unit contains 1 Co 2+ Cation, 1 EIA 2- anion, 1 bpy ligand and a free water molecule. Co1 is a hexacoordinated octahedral geometry, see...

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Abstract

The invention provides a binuclear cobalt (II) based metal organic complex and a preparation method thereof. The binuclear cobalt (II) based metal organic complex has a repeating unit with a chemicalformula of {[Co(EIA)(bpy)].(H2O)}n, EIA is 5-ethoxyisophthalic acid, bpy is 4,4'-dipyridine, and the binuclear cobalt (II) based metal organic complex has a two-dimensional network structure.

Description

technical field [0001] The invention relates to the field of metal-organic complexes, in particular to a binuclear cobalt (II)-based metal-organic complex and a preparation method thereof. Background technique [0002] Metal-organic complexes are metal-organic framework materials with one-dimensional, two-dimensional or three-dimensional structures synthesized by self-assembly of metal ions and organic ligands under certain conditions. As a new type of functional material, metal-organic complexes have the characteristics of high porosity, plastic structure, and uniform pore size. Due to the unique porous structure and the simple and easy preparation method, it has potential application value in the fields of adsorption separation, fluorescence sensing, magnetism and drug sustained and controlled release. [0003] 5-Ethoxyisophthalic acid is a ligand with various modes of attachment and coordination, which is very important for building the structure of coordination polymers...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 马德运闫鹏周依萍陈丽琳麦旭锋吴银冰刘付美琳
Owner ZHAOQING UNIV