配合物［Cu2(C8H3NO6)2(C10H8N2)(H2O)2］·2H2O的制备和晶体结构-陕西师范大学学报期刊社网站

陕西师范大学学报（自然科学版）

化学与材料科学

配合物［Cu2(C8H3NO6)2(C10H8N2)(H2O)2］·2H2O的制备和晶体结构

倪迎瑞1，高玲香1*，刘迎花2，吴晓妮1，何玲1

(1 应用表面与胶体化学教育部重点实验室, 陕西师范大学化学与材料科学学院, 陕西西安 710062; 2 西安市长安区第一中学, 陕西西安 710100)

倪迎瑞,男,硕士，主要从事金属有机配合物的合成研究．

摘要:

通过3-硝基邻苯二甲酸和2,2′-联吡啶与硝酸铜在乙醇水溶液中反应，得到了双核铜配合物［Cu2(C8H3NO6)2(C10H8N2)(H2O)2］·2H2O (C8H3NO6=3-硝基邻苯二甲酸根，C10H8N2= 2,2’-联吡啶)，并对其进行了IR和元素分析的表征．X射线衍射测定结果显示，晶体属三斜晶系，空间群为P-1，晶体学参数为a=０.７５3 4（19）ｎｍ, b=1.046 7(3)ｎｍ, c=1.204 4(3)ｎｍ, α=87.835(2)°,β=74.911(3)°,γ=77.437(3)°,V=０.894 9(4)nm3, Z=1, Dc=1.725 g/cm3, μ=1.277 mm-1, F(000)=474, R=0.038 2．中心铜离子为五配位，配位原子在铜离子周围排列成四角锥状．呈中心对称关系的两个不对称配位单元通过Cu—O键连接形成二聚体．离散的配合物分子通过分子间氢键和C-H…π等超分子弱相互作用力构筑并稳定了空间三维网络结构．

关键词：

铜配合物； 3-硝基邻苯二甲酸； 2,2′-联吡啶；晶体结构

收稿日期：

2008-07-15

中图分类号：

TJ 551;O 627.42

文献标识码：

文章编号：

1672-4291(2009)04-0060-04

基金项目：

国家自然科学基金资助项目(20771071)；陕西省自然科学基金资助项目(2006B23，2007B06)；教育部“新世纪优秀人才支持计划”（2007）

Doi:

Synthesis and crystal structure of ［Cu2(C8H3NO6)2(C10H8N2)2(H2O)2］·2H2O

NI Ying-rui1, GAO Ling-xiang1*, LIU Ying-hua2, WU xiao-ni1, HE Ling1

(1 Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China; 2 Chang′an NO. one high School, Xi′an, 710100, Shaanxi, China)

Abstract:

Reaction of Cu(NO3)2·3H2O with 3-Nitrophthalic acid and 2,2′-Bipyridyl in EtOH/H2O solution gave a dinuclear complex ［Cu2(C8H3NO6)2(C10H8N2)2(H2O)2］·2H2O (C8H3NO6=3-Nitrophthalate, C10H8N2=2,2′-Bipyridyl). The complex was characterized by elemental analysis，IR spectra, and single crystal X-ray diffraction analysis, which revealed that the title compound is triclinic in space group P-1 with crystal parameters of a=0.753 4(19)ｎｍ, b=1.046 7(3)ｎｍ, c=1.204 4(3)ｎｍ, α=87.835(2)°, β=74.911(3)°, γ=77.437(3)°, V=0.894 9(4)ｎｍ3, Z=1, Dc=1.725 g／cm3, μ=1.277 mm-1, F(000)=474, R=0.0382. The central copper cation is 5-coordinated in a square pyramidal coordination sphere with the five coordination donor atoms situated on the vertexes. Every two central-symmetrically related coordination units form a dimer as a Cu—O bond involved. The discrete molecules are connected to form a three-dimensional network by weak supramolecular interactions such as intermolecular hydrogen-bonds and π-π stacking, CCDC 621787.

KeyWords:

copper complex; 3-Nitrophthalic acid; 2,2′-Bipyridyl; preparation; crystal structure;