3-羧乙基-苯甲酸镉配合物的合成、结构和荧光性质

Synthesis,Structure,Luminescent Property of Cadmium Complex with m-( Carboxyl-methyloxy)-benzenecarboxylic Acid Ligand

用3-羧乙基苯甲酸和Cd CO3反应合成了配合物[Cd2(mcmb)2(bipy)2(H2O)2](1)(H2mcmb:3-羧乙基-苯甲酸;bipy:2,2'联吡啶),用单晶X-射线、元素分析对生成的晶体进行了表征,结构研究发现该配合物为之字形的一维链结构,Cd(II)中心采取五配位的扭曲的八面体几何构型,配体mcmb2-作为μ2-桥连结Cd(II)离子形成一维链,通过O–H…O和C–H…O氢键将一维链连结在一起形成二维层,再进一步通过C–H…O氢键将二维层结合在一起形成三维结构.还研究了配合物1的荧光性质.

The title complex [ Cd2 （mcmb） 2 （bipy） 2 （ H2 O） 2 ] （ 1 ）, with H2 mcmb as m- （Carboxyl-methyloxy） - benzenecarboxylic Acid, and bipy as 2,2＇-bipyridine, was obtained by using H2mcmb and 2,2＇-bipyridine with CdCO3 reaction. Its structure was determined by single-crystal X-ray diffraction analyses, and further characterized by elemental analyses. Complex 1 is a one-dimensional zigzag chain structure, in which the Cd （II） takes six-coor- dinated distorted oetahedral geometry. Each mcmb^2- anion acts as a μ2-bridging ligand, linking adjacent Cd （II） atoms and giving rise to one-dimensional structure. The two-dimensional layers are constructed through O-H… O and C-H…O hydrogen bonds. The three-dimensional structure is formed by C-H…O weak hydrogen bonding inter- actions. Luminescent property of complex 1 was investigated.