1，2-环己二羧酸及芳香含氮配体的双核镉、锰配合物的合成和晶体结构

用水热法合成了两种新的配合物Cd2(e,e-trans-chdc)2(bipy)2(H2O)2].H2O(1)和Mn2(e,a-cis-chdc)2(phen)2(H2O)2].2H2O(2)(chdc=1,2-环己二羧酸,bipy=2,2′-联吡啶和phen=1,10-邻菲咯啉),用X-射线单晶衍射分析确定了配合物的晶体结构。配合物1和2均为双核分子。配合物1中,2个镉髤离子由2个1,2-环己二羧酸根以e,e-trans配位方式桥联,每个镉髤离子与1个2,2′-联吡啶的2个氮原子、2个1,2-环己二羧酸根的4个氧原子及1个水分子中的氧原子配位,形成了单帽变形三棱柱构型。配合物2中,2个锰髤离子由2个1,2-环己二羧酸根以e,a-cis配位方式桥联,每个锰髤离子与1个1,10-邻菲咯啉的2个氮原子、2个1,2-环己二羧酸根的3个氧原子及1个水分子中的氧原子配位,形成了畸变的八面体构型。配合物1和2分子之间都存在π-π堆积和O-H…O、C-H…O弱作用,进而将双核分子连接成三维超分子网络结构。配合物的荧光均来自于配体的荧光。

Synthesis and Crystal Structure of Binuclear Cadmium and Manganese Complexes with 1,2-Cyclohexanedicarboxylic Acid and Aromatic N-containing Ligands

Two compounds,Cd2(e,e-trans-chdc)2(bipy)2(H2O)2]·H2O(1) and Mn2(e,a-cis-chdc)2(phen)2(H2O)2]·2H2O(2)(chdc=cyclohexanedicarboxylic acid,bipy=dipyridyl and phen=1,10-phenanthroline),have been obtained by hydrothermal method and characterized by X-ray single-crystal diffraction.The two complexes are binuclear complexes.In complex 1,two Cd(Ⅱ) cations are bridged by 1,2-chdc with e,e-trans-conformation.Each Cd(Ⅱ) cation is seven-coordinated to two nitrogen atoms of bipy molecule,four oxygen atoms of two 1,2-chdc ligands and one oxygen atom of water molecule,forming distorted mono-capped trigonal-prism.In complex 2,two Mn(Ⅱ) cations are bridged by 1,2-chdc with e,a-cis-conformation.Each Mn(Ⅱ) cation is six-coordinated to two nitrogen atoms of phen molecule,three oxygen atoms of two 1,2-chdc ligands and one oxygen atom of water molecule,forming distorted octahedron coordination environment.The π-π stacking and O-H…O and C-H…O hydrogen bonds in the two complexes result in 3D supramolecular networks.Fluorescence spectra of the two complexes are assigned to π*-π of ligand.CCDC: 815211,1;815212,2.