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Citation: ZHU Haotian, LI Xiaohui, BAI Jianping, LU Mingda, AN Yue, YOU Wansheng. Synthesis, Crystal Structure and Catalytic Activity of a Dawson-type Tungstophosphate Decorated by Copper Complexes[J]. Chinese Journal of Applied Chemistry, ;2015, 32(4): 433-441. doi: 10.11944/j.issn.1000-0518.2015.04.140277 shu

Synthesis, Crystal Structure and Catalytic Activity of a Dawson-type Tungstophosphate Decorated by Copper Complexes

1.
School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, Liaoning 116029, China

Corresponding author: AN Yue, YOU Wansheng,
Received Date: 6 August 2014
Available Online: 28 November 2014
Fund Project: 全国大学生创新创业训练计划(201310165014) (201310165014)辽宁省高等学校科学研究一般项目(L2014421)资助 (L2014421)

An inorganic-organic hybrid compound[Cu(H₂biim)₂(H₂O)] [{ Cu(H₂biim)₂}₂(P₂W₁₈O₆₂)]·11H₂O(H₂biim=2,2'-biimidazole)(1) has been hydrothermally constructed by the reaction of Cu(Ⅱ)-H₂ biim complexes and Dawson-type tungstophosphate,and characterized by single-crystal X-ray diffraction,infrared spectroscopy(IR),X-ray powder diffraction(XRD),elemental analysis and electrochemical analysis.Structural analysis shows that the polyanion[P₂W₁₈O₆₂]^6-,as a bidentate ligand,coordinates with two Cu²⁺ ions to form a bi-Cu(Ⅱ)-supporting heteropolyanion[{ Cu(H₂biim)₂}₂(P₂W₁₈O₆₂)]^2-,which is surrounded by an isolated[Cu(H₂biim)₂(H₂O)]²⁺ and eleven H₂O molecules. The presence of N-H…O/OW hydrogen bonds between H₂biimmolecules and polyoxoanion or water molecules,in company with the synergistic effect of electrostatic interactions and π-π stack,leads to the formation of a crystal material with 3D framework further. Compound 1 displays good electrocatalytic activity toward the reduction of H₂O₂ and Na₂NO₂.Meanwhile it is also a good acid-catalyst for the synthesis of cyclohexanone ethylene ketal and can be recycled.
- copper complex,
- dawson structure,
- tungstophosphate,
- biimidazole,
- electrocatalytic activity,
- catalytic activity
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