Chinese Journal of Applied Chemistry

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Synthesis, Structure and Mimic Haloperoxidase Catalytic Activity of Peroxovanadium Complexes

CHEN Chen2, ZHANG Rui2, WANG Xuan2, CAO Yunzhu2, BAI Fengying1*, ZHANG Xiaoxi2, LI Guanghua3, SHI Zhan3, XING Yongheng2   

  1. (1.College of Life Science,Liaoning Normal University;
    2.College of Chemistry and Chemical Engineering,Dalian 116029,China;
    3.State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,College of Chemistry,Jilin University,Changchun 130012,China)
  • Received:2012-11-23 Revised:2013-04-11 Published:2013-12-10 Online:2013-12-10
  • Contact: Feng Ying Bai

Abstract: Based on mimicking the environment of the active center of vanadium haloperoxidase(V-HPOs), we designed and synthesized two kinds of peroxovanadium complexes:Na[VO(O2)2(C10H8N2)]·8H2O(1) and K3H[(VO)2(O2)4(μ2-O)]·H2O(2), which were structurally characterized by X-ray single crystal diffraction, elemental analysis, IR and UV-Vis spectroscopies. Structural analyses reveal that complex 1 crystallized in an triclinic system with space group P-1, a=0.7213(2) nm, b=1.1269(4) nm, c=1.3728(4) nm, α=68.349(4)°, β=89.178(4) °, γ=88.050(4)°, V=1.0365(6) nm3 and the complex 2 crystallized in an monoclinic system with space group P21/c, a=0.67047(12) nm, b=0.99503(18) nm, c=1.5817(3) nm, α=γ=90°, β=93.739(2)°, V=1.0530(3) nm3. Complex 1 has a distorted pentagonal bipyramidal geometry, while complex 2 has a distorted octahedron geometry. In addition, by studying the bromination reaction activity, it shows that the peroxovanadium complexes can be considered as a potential functional model of bromoperoxidase.

Key words: vanadium haloperoxidase, peroxovanadium complex, crystal structure, catalytic activity

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