高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (5): 862.

• 研究论文 • 上一篇    下一篇

[Ni(qina)2(H2O)2]·2DMSO配合物的合成、结构及其催化性能

王传胜, 吴琼, 朱明昌, 高恩君   

  1. 沈阳化工学院配位化学研究室, 沈阳 110142
  • 收稿日期:2008-08-26 出版日期:2009-05-10 发布日期:2009-05-10
  • 通讯作者: 高恩君, 男, 教授, 主要从事配位化学与生物无机化学研究, E-mail: ejgao@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号: 20671064)资助.

Synthesis, Structure and Catalysis Performance of Complex [Ni(qina)2(H2O)2]·2DMSO

WANG Chuan-Sheng, WU Qiong, ZHU Ming-Chang, GAO En-Jun*   

  1. Laboratory of Coordination Chemistry, Shenyang Institute of Chemical Technology, Shenyang 110142, China
  • Received:2008-08-26 Online:2009-05-10 Published:2009-05-10

摘要:

在常温下, 通过溶剂置换法制备了[Ni(qina)2(H2O)2]·2DMSO单晶, 其中qina-为喹哪啶酸根, DMSO为二甲亚砜. 配合物属于单斜晶系, C2/m空间群. 2个qina-配体以氮原子和氧原子与Ni(Ⅱ)离子反式螯合配位, 2个H2O分子则以氧原子与Ni(Ⅱ)离子轴向配位, 形成八面体配合物. 配合物分子之间通过氢键和π-π堆积等弱相互作用构筑成三维超分子结构. 该配合物能显著提高乙酸-1-萘酯的水解反应速率, 当配合物浓度为1.0×10-4 mol/L时, 在pH=8.44的乙酸-1-奈酯体系中, 酯的水解速率提高了365倍.

关键词: 配合物, 镍(Ⅱ)离子, 喹哪啶酸, 催化性质

Abstract:

A single crystal complex [Ni(qina)2(H2O)2]·2DMSO(Hqina=quinaldinic acid, DMSO=dimethyl sulfoxide) was synthesized at room temperature by the solvent substitution method, which belongs to monoclinic system with space group C2/m. Two qina ligands chelate a nickel(Ⅱ) ion by O and N atoms and two H2O coordinate a Ni(Ⅱ) ion by two O atoms at an axis. The complex formed inerratic octahedron configuration, and H bonds, π-π stacking were observed between the molecules. 1-Naphthyl acetate hydrolysis velocity has been remarkably enhanced by the title complex, when the concentration of the title complex was at 1.0×10-4 mol/L, pH 8.44. The enhancement multiple was 365.

Key words: Complex, Nickel(Ⅱ) ion, Quinaldinic acid, Catalysis activity

TrendMD: