Metallic copper complex of bipyridine dicarboxylic acid derivatives and preparation method thereof

A technology of bipyridinedicarboxylic acid and complexes, applied in copper organic compounds, 1/11 group organic compounds without C-metal bonds, organic chemical methods, etc., can solve rare, organic and metal-organic complexes. Issues such as few reports and restrictions on the development of ferroelectric materials have achieved the effects of sufficient sources, easy expansion of production, and high purity

Inactive Publication Date: 2017-08-18
TAIYUAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although ferroelectric materials are widely used and have high application value, they are very rare in nature. So far, most of the reported ferroelectric materials are inorganic compounds, such as KH 2 PO 4 (KDP), BaTiO 3 and LiNbO 3 However, organic compounds and metal-organic complexes are rarely reported
This is because the structure of ferroelectric materials based on organic molecules must be crystallized in a non-centrosymmetric space group and belong to one of the 10 polar point groups. This strict requirement once limited the development of ferroelectric materials based on organic molecules. However, compared with inorganic compounds, metal-organic complexes have many advantages, so in recent years, the research on ferroelectric materials has gradually expanded to the research field of inorganic-organic hybrid materials, but at present, inorganic-organic complex ferroelectric materials The material is in the preliminary research stage

Method used

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  • Metallic copper complex of bipyridine dicarboxylic acid derivatives and preparation method thereof
  • Metallic copper complex of bipyridine dicarboxylic acid derivatives and preparation method thereof
  • Metallic copper complex of bipyridine dicarboxylic acid derivatives and preparation method thereof

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preparation example Construction

[0024] A typical embodiment of the present invention provides a method for preparing a metal copper complex of bipyridyl dicarboxylic acid derivatives, comprising the following steps:

[0025] 1) Dissolve the ligand dichloride 1,1'-bis(3-benzoic acid)-4,4'-bipyridine in distilled water, then add the template agent 2,2'-biimidazole, and adjust the pH to 1 with HCl ~4, then add CuCl dropwise 2 2H 2 Aqueous solution of O, the ligand, template agent 2,2’-biimidazole and CuCl 2 2H 2 The mol ratio of O is 1: 1: 5~15;

[0026] 2) React at room temperature for 5 to 8 hours, filter, place the filtrate at room temperature, and filter to obtain the metal copper complex of bipyridine dicarboxylic acid derivatives.

[0027] The effect of template agent 2,2'-biimidazole can be analogous to catalyst, does not participate in reaction, plays structure guiding effect, if do not add template agent, will not be able to obtain complex among the present invention; It is well dissolved and HCl ...

Embodiment 1

[0033] Dissolve 0.5 mmol dichloro-1,1’-bis(3-benzoic acid)-4,4’-bipyridine and 0.5 mmol 2,2’-biimidazole in 20 mL H 2 In O, adjust the pH to 3 with 1mol / L HCl, then add 5 mmol CuCl 2 2H 2O is added to it, that is, the molar ratio between the ligand, the template agent, and the metal salt is 1: 1: 10, stirred at room temperature for 5 hours, filtered to obtain a blue filtrate, left to evaporate at 25°C, and a blue color will appear after 3 weeks Crystals were collected by filtration in a 35% yield.

[0034] Structure determination of the complex:

[0035] The crystal sample obtained in Example 1 was fixed on a Bruker SMART 1000 CCD surface probe diffractometer, and the graphite monochromator MoKα was used as the radiation source to collect the X-Ray diffraction data of the sample pair with a wavelength of 0.71073 Å. In the ω-scan mode, the diffraction data were corrected for LP factors and empirical absorption. After restoring all X-Ray diffraction patterns to diffraction...

Embodiment 2

[0043] Dissolve 0.5 mmol dichloro-1,1’-bis(3-benzoic acid)-4,4’-bipyridine and 0.5 mmol 2,2’-biimidazole in 20 mL H 2 In O, adjust the pH to 1 with 1mol / L HCl, then add 5 mmol CuCl 2 2H 2 O is added to it, that is, the molar ratio between the ligand, the template agent, and the metal salt is 1: 1: 15, stirred at room temperature for 5 hours, filtered to obtain a blue filtrate, left to evaporate at 25°C, and a blue color will appear after 3 weeks Crystals were collected by filtration in a 25% yield.

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Abstract

The invention discloses a metallic copper complex of bipyridine dicarboxylic acid derivatives and a preparation method thereof and application of the metallic copper complex as ferroelectric material, and belongs to the technical field of synthesis of novel chemical materials. The metallic copper complex has the chemical formula of {[Cu(C26H20N2O4)Cl(H2O)]<+>.Cl<->.2H2O}n, crystal of the metallic copper complex is of monoclinic system, having space group Cc and cell parameters of a=17.225(4) angstrom, b=14.918(3) angstrom, c=11.589(3) angstrom, alpha=gamma=90.00 DEG, beta=118.957(3) DEG, and Z=4. The metallic copper complex of bipyridine dicarboxylic acid derivatives is prepared via conventional synthetic processes. The preparation method of the metallic copper complex of bipyridine dicarboxylic acid derivatives has simple process, the sources are sufficient, crystal samples are high in purity, growth speed is high, and the yield is high; the crystal is present in the polar space group; the metallic copper complex has ferroelectric properties at room temperature, may act as a ferroelectric material applicable to scientific experiments and studies and other fields, and is widely applicable.

Description

technical field [0001] The invention relates to the technical field of synthesis of new chemical materials, in particular to a complex of 1,1'-bis(3-benzoyl)-4,4'-bipyridyl and copper (II), a preparation method thereof and as a Applications of ferroelectric materials. Background technique [0002] Ferroelectric materials refer to the crystal structure of the material that has spontaneous polarization when no external electric field is applied, and the direction of its spontaneous polarization can be reversed or reoriented by an external electric field. This property of ferroelectric materials is known as "ferroelectricity" or "ferroelectric effect". The first ferroelectric material was studied by Valasek et al. in 1920, potassium tartrate crystal NaKC 4 h 4 o 6 4H 2 O was discovered when O, so far, more than 300 kinds of ferroelectric substances have been discovered. These substances can be used in electro-optical devices, information storage, NLO tunable devices, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08G11C11/22
CPCC07B2200/13C07F1/005G11C11/22
Inventor 高晓丽
Owner TAIYUAN NORMAL UNIV
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