摘要
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.
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.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2009年第19期2193-2198,共6页
Acta Chimica Sinica
基金
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(No.KM200610028006)
北京市自然科学基金(No.2092009)
北京市留学人员科技活动择优资助优秀项目
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
2
2'-biimidazole
2
2'-bipy
cadmium(II) complex
copper(II) complex
zinc(II) complex
crystal structure