Synthesis and Structural Characterization of Mono- and Di-nuclear Zinc(Ⅱ) Coordination Compounds of Triphenylphosphoniop
Two novel coordination compounds of Zn(Ⅱ) with Ph3P+(CH2)2CO-2(L), namely, [ZnL4(H2O)2]·(ClO4)2·2H2O(compound 1) and [Zn2Cl4(μ-L-O,O′)2](compound 2), have been prepared. The single crystal X-ray structure analysis of these compounds indicates that in compound 1 the Zn(Ⅱ) atom is coordinated by four monodentate carboxylato groups on the equatorial plane and two aqua ligands occupy the axial coordination positions. The pendant oxygen atoms form strong hydrogen bonds with the aqua molecules which results in the stability of this structure. In compound 2, two Zn(Ⅱ) atoms are bridged by a pair of carboxylato groups, showing a skew-bridge mode, and thus enabling a long Zn(Ⅱ)…Zn(Ⅱ) separation. As we know, it is a dinuclear coordination compound with the longest Zn…Zn separation.
作 者： LI Song-lin HOU Jian-feng JIANG Ning-yi Mak Thomas C. W 作者单位： LI Song-lin,HOU Jian-feng,JIANG Ning-yi(Department of Chemistry, Tianjin University, Tianjin 300072, P. R. China)Mak Thomas C. W(Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, P. R. China)
刊 名： 高等学校化学研究（英文版） ISTIC SCI 英文刊名： CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 年，卷(期)： 2005 21(4) 分类号： O6 关键词： Triphenylphosphoniopropionate Quaternary phosphonium betaine Mono- and Di-nuclear Zn(Ⅱ) coordination compounds Crystal structure