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化学学报
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化学学报 ›› 2007, Vol. 65 ›› Issue (16): 1612-1616. 上一篇    下一篇

研究论文

配合物[Co(qina)2(DMSO)2]的结构及其对乙酸-1-萘酯水解的催化研究

高恩君*, 王克华, 于影, 尹洪喜, 孙亚光   

  1. (沈阳化工学院配位化学研究室 沈阳 110142)
  • 投稿日期:2006-09-21 修回日期:2007-03-26 发布日期:2007-08-28
  • 通讯作者: 高恩君

Crystal Structure of Complex [Co(qina)2(DMSO)2] and Its Catalysis for 1-Naphthyl Acetate Hydrolysis

GAO En-Jun*; WANG Ke-Hua; YU Ying; YIN Hong-Xi; SUN Ya-Guang   

  1. (Laboratory of Coordination Chemistry, Shenyang Institute of Chemical Technology, Shenyang 110142)
  • Received:2006-09-21 Revised:2007-03-26 Published:2007-08-28
  • Contact: GAO En-Jun

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合成了配合物[Co(qina)2(DMSO)2]单晶, 其中, qina－为喹哪啶酸根, DMSO为二甲基亚砜. 配合物为单斜晶系, P2(1)/C空间群, 2个qina－配体以氮原子和氧原子与Co(II)离子螯合配位, 2个DMSO以氧原子与Co(II)离子轴向配位, 形成规则的八面体构型配合物, 分子之间存在π-π堆积弱相互作用. 该配合物可显著提高乙酸-1-萘酯的水解速率, 在配合物浓度和萘酯浓度各为1.0×10－4和3.0×10－5 mol•L－1条件下, 酯的水解速率提高460倍.

关键词: 配合物, 结构, 钴(II)离子, 喹哪啶酸, 催化活性

The single crystal complex [Co(qina)2(DMSO)2] (Hqina＝quinaldinic acid) was synthesized, which belongs to monoclinic system with space group P2(1)/C. Two qina ligands chelate a cobalt(II) ion by O and N atoms and two DMSO ligands coordinate a cobalt(II) ion by two O atoms at an axis. The complex formed inerratic octahedron configuration, and π-π stacking weak interaction was observed between the molecules. 1-Naphthyl acetate hydrolysis velocity was remarkably enhanced by the title complex, at the concentrations of 1-naphthyl acetate and the title complex being 1.0×10－4 mol•L－1 and 3.0×10－5 mol•L－1, respectively. The enhancement multiple was 460.

Key words: complex, structure, cobalt(II), quinaldinic acid, catalysis activity