论文部分内容阅读
通过溶剂挥发法,由4,4’-联吡啶(4,4’-bpy),2,4,6-三巯基均三嗪(ttcH3)及含有不同反位阴离子的MnⅡ盐制备了配位聚合物{[Mn(ttc H2)2(bpy)]·bpy}n。X-射线单晶衍射结构分析表明该配位聚合物结晶于单斜晶系,C2/c空间群。中心MnⅡ离子的畸变八面体配位几何由一对处于硫酮异构型式的ttc H2-阴离子的两对N和S原子以及两个4,4’-bpy配体的两个N原子构成。而4,4’-bpy配体则通过两个吡啶环上的N原子将相邻的金属MnⅡ离子桥接为一维(1D)链状结构。该1D链状配位聚合物通过链间的氢键作用及与晶格中游离4,4’-bpy的氢键作用进一步拓展为三维(3D)超分子网络结构。
Coordination polymerization was prepared by solvent evaporation from 4,4’-bipyridyl (4,4’-bpy), 2,4,6-trimercapto-s-triazine (ttcH3) and MnⅡ salts with different anions. {[Mn (ttc H2) 2 (bpy)] · bpy} n. X-ray single crystal diffraction structure analysis shows that the coordination polymer crystallizes in the monoclinic, C2 / c space group. The distorted octahedral coordination geometry of the central Mn II ion consists of a pair of two N and S atoms of ttc H 2 -anion in the thioketal type and two N atoms of two 4,4’-bpy ligands. While the 4,4’-bpy ligands bridge the adjacent metal Mn II ions into a one-dimensional (1D) chain structure through N atoms on the two pyridine rings. The 1D chain coordination polymer further expands to a three-dimensional (3D) supramolecular network structure by hydrogen bonding between chains and hydrogen bonding with free 4,4’-bpy in the crystal lattice.