1,2,4,5-苯四甲酸根桥联镍(Ⅱ)与咪唑混配配位聚合物的合成与晶体结构  

Synthesis and Crystal Structure of Mixed Ligand Coordination Polymer of Ni(Ⅱ) Bridged by 1,2,4,5-Benzentetracarboxylic Anion and Coordinated with Imidazole

作　　者：袁继新[1] 胡茂林[1] 王舜[1] 熊静[1] 

机构地区：[1]温州师范学院化学系,温州325027

出　　处：《无机化学学报》2001年第5期741-744,共4页Chinese Journal of Inorganic Chemistry

基　　金：浙江省教委研究计划项目(No.19990525)。

摘　　要：The title complex {[Ni(TCB)2/2(Him)2(H2O)2]· 6H2O}n(where TCB = 1,2,4,5 benzentetracarboxylic anion, Him=imidazole) has been synthesized in aqueous solution. The <IMG SRC="IMAGE/12180050.JPG" HEIGHT=11 WIDTH=12>crystal structure has been determined by single crystal X ray diffraction method. It crystallizes in the triclinic system, space group (# 2) with a=1.0661(4)nm,b=1.1175(3)nm,c=1.0062(4)nm,α =94.03(3)° ,β = 110.81(3)° ,γ =114.71(2)° ,V=0.9837(7)nm3,Z=1,F(000)=478,DC=1.553g· cm- 3,F.W.=920.11,u=10.41cm- 1,R=0.040,RW=0.051.In this compound, one of the nickel atom is coordinated by two oxygen atoms from TCB, two oxygen atoms from two water molecules and two nitrogen atoms from two imidazole molecules in a trans fashion to complete an octahedron; whereas the other is ligated by four nitrogen atoms from four imidazole molecules to form a planar square geometry.The title complex {[Ni(TCB)2/2(Him)2(H2O)2]· 6H2O}n(where TCB = 1,2,4,5 benzentetracarboxylic anion, Him=imidazole) has been synthesized in aqueous solution. The <IMG SRC='IMAGE/12180050.JPG' HEIGHT=11 WIDTH=12>crystal structure has been determined by single crystal X ray diffraction method. It crystallizes in the triclinic system, space group (# 2) with a=1.0661(4)nm,b=1.1175(3)nm,c=1.0062(4)nm,α =94.03(3)° ,β = 110.81(3)° ,γ =114.71(2)° ,V=0.9837(7)nm3,Z=1,F(000)=478,DC=1.553g· cm- 3,F.W.=920.11,u=10.41cm- 1,R=0.040,RW=0.051.In this compound, one of the nickel atom is coordinated by two oxygen atoms from TCB, two oxygen atoms from two water molecules and two nitrogen atoms from two imidazole molecules in a trans fashion to complete an octahedron; whereas the other is ligated by four nitrogen atoms from four imidazole molecules to form a planar square geometry.

关 键 词：镍(Ⅱ)配位聚合物 1 2 4 5-苯四甲酸根 咪唑 晶体结构 合成 混配 配位聚合物 

分 类 号：O614.813[理学—无机化学]