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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (19): 2193-2198. 上一篇    下一篇

研究论文

刚性配体2,2-联吡啶诱导的双咪唑金属超分子配合物的合成与晶体结构

金琼花, 徐立军, 孙静静, 代永成   

  1. (首都师范大学化学系 北京 100048)
  • 投稿日期:2009-05-05 修回日期:2009-07-12 发布日期:2009-08-03
  • 通讯作者: 金琼花 E-mail:jinqh204@163.com
  • 基金资助:

    国家自然科学基金(No.20871085)资助项目；教育部留学回国人员启动基金；北京市教委项目(KM200610028006)；北京市自然科学基金(2092009)和北京市留学人员科技活动择优资助优秀项目.

Synthesis and Crystal Structures of Metal Complexes with 2,2-Biimidazole Induced by Rigid Ligand 2,2-Bipyridine

Jin, Qionghua*     Xu, Lijun Sun,         Jingjing Dai,    Yongcheng   

  1. (Department of Chemistry, Capital Normal University, Beijing 100048)
  • Received:2009-05-05 Revised:2009-07-12 Published:2009-08-03

PDF

2226

被引次数

30

合成了3种新的超分子配合物[Cd(H2biim)(2,2'-bipy)(NO3)2] (1), [Cu(H2biim)(2,2'-bipy)(H2O)](NO3)2 (2)和[Zn(H2biim)(2,2'-bipy)(H2O)](NO3)2 (3) (H2biim＝双咪唑; 2,2'-bipy＝2,2'-联吡啶), 并通过X射线单晶衍射测定了其结构. 配合物1～3均为单斜晶系, 属于P2(1)/c空间群, 在1中, Cd(II)为六配位, 它与双咪唑的2个氮原子, 联吡啶的2个氮原子和2个硝酸根的2个氧原子配位. 在2和3中, Cu(II)和Zn(II)均为五配位的, 它们与双咪唑的2个氮原子、2,2'-联吡啶的两个氮原子和一个水分子配位. 1～3的对称单元均通过双咪唑、硝酸根和水之间形成的氢键R21(7), R21(4) 和R44(18)构筑了1D链状超分子.

关键词: 双咪唑, 2,2-联吡啶, 镉配合物, 铜配合物, 锌配合物, 晶体结构

Three new complexes [Cd(H2biim)(2,2'-bipy)(NO3)2] (1), [Cu(H2biim)(2,2'-bipy)(H2O)](NO3)2 (2) and [Zn(H2biim)(2,2'-bipy)(H2O)](NO3)2 (3) (H2biim＝2,2'-biimidazole; 2,2'-bipy＝2,2'-bipyridine) have been synthesized and characterized by X-ray single crystal diffraction. In 1, the Cd(II) atom is coordinated by two nitrogen atoms from one H2biim ligand, two nitrogen atoms from one 2,2'-bipy ligand and two oxygen atoms from two nitrate anions. In 2 and 3, Cu(II) and Zn(II) atoms are coordinated by two nitrogen atoms from one H2biim ligand, two nitrogen atoms from one 2,2'-bipy ligand and one oxygen atom from one H2O ligand. By multiple robust hydrogen bonds R21(7), R21(4) and R44(18) formed by NH groups of 2,2'-biimidazole, oxygen atoms of nitrate anions and water molecules, complexes 1～3 extend one-dimensional zigzag chains.

Key words: 2,2-biimidazole, 2,2-bipy, cadmium(II) complex, copper(II) complex, zinc(II) complex, crystal structure