配位聚合物{[Cu(4,4′-bpy)(OH)(H_2O)_2](ClO_4)·2H_2O}_n的合成、表征与性质

Synthesis,Structures and Properties of Coordination Polymer{[Cu(4,4′-bpy)(OH)(H_2O)_2](ClO_4)·2H_2O}n

采用超声振荡反应与溶液挥发相结合的方法,合成了一类具有3D结构的新型超分子配位聚合物{[Cu(4,4′-bpy)(OH)(H_2O)_2](ClO_4)·2H_2O}n(4,4′-bpy=4,4′-联吡啶).获得其单晶结构,并用X-射线单晶衍射分析、元素分析、X-射线粉末衍射分析和循环伏安法对其进行表征.研究结果表明:该配合物属于单斜晶系;空间群为Cc;晶胞参数为a=1.023 00(7)nm,b=1.988 8(1)nm,c=0.749 90(5)nm,β=100.403(7)°,V=1.500 6(2)nm3,Z=4.在标题化合物中,每个铜(Ⅱ)离子由2个4,4′-联吡啶的2个氮原子,1个氢氧根的1个氧原子和2个水分子的2个氧原子配位,形成畸变的CuN2O3四角锥构型.因每个4,4′-联吡啶桥联2个铜(Ⅱ)离子,故形成了一维链状结构,而相邻的一维链状结构,又通过分子间氢键和π-π相互作用,联结成3D超分子配位聚合物.

A new 3Dsupramolecular coordination polymer of{[Cu（4,4′-bpy）（OH）（H_2O）_2]（ClO_4）·2H_2O}n,has been synthesized by the ultrasonic way and the solution evaporation method.The structure of the title compound has been characterized by single crystal X-ray diffraction,elemental analysis,powder X-ray diffraction and cyclic voltammetry method.X-ray single-crystal diffraction analysis reveals that the compound crystallizes in the monoclinic system,space group Cc with a=1.023 00（7）nm,b=1.98 88（1）nm,c=0.749 90（5）nm,β=100.403（7）°,V=1.50 061（2）nm3,Z=4.Cu（Ⅱ）atom in the title compound has a distorted CuN2O3 square pyramid coordination.The basal plane consists of two N atoms from two 4,4′-bpy,one water O atom and one hydroxyl O atom while one oxygen atom from the other water occupies axial position.Every two Cu（Ⅱ）atoms are bridged by one 4,4′-bpy ligand to generate one-dimensional chain.There are intermolecular hydrogen bonds of O-H…O andπ？πinteractions between adjacent one-dimensional chains,forming a three-dimensional supramolecular architecture.