Syntheses and Structures of Two Isomorphous Metal-organic Coordination Complexes Based on 4-Pyrimidin-5-ylbenzoic Acid  

作　　者：李亚峰 罗军华 

机构地区：[1]Key Laboratory of Optoelectronic Materials Chemistry and Physics,and State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,The Chinese Academy of Sciences,and National Engineering Research Center for Optoelectronic Crystalline Materials

出　　处：《Chinese Journal of Structural Chemistry》2009年第11期1485-1489,共5页结构化学（英文）

基　　金：Supported by the 973 Program (2010CB933500)

摘　　要：The reactions of 4-pyrimidin-5-ylbenzoic acid （HL） with Co（NO3）2·6H2O and Ni（NO3）2·6H2O gave rise to two isomorphous mononuclear coordination complexes, namely, [CoL2（H2O）4] （1） and [NiL2（H2O）4] （2）. Both compounds were characterized by IR spectroscopy and single-crystal X-ray diffraction. X-ray crystallographic analyses reveal that they crystallize in monoclinic, space group P21/n. In the crystal structures of these two complexes, only one nitrogen atom of L coordinates to the metal center, and neither carboxylate group nor another nitrogen atom of L links to Co（Ⅱ） or Ni（Ⅱ）. 2D Layers with significant hydrogen bonds can be observed, and they are further linked by L to form a 3D supramolecular network. Nitrogen atoms are not involved in forming hydrogen bonds, but carboxylic groups of the ligands play an important role in the configuration of this hydrogen-bond layer.The reactions of 4-pyrimidin-5-ylbenzoic acid （HL） with Co（NO3）2·6H2O and Ni（NO3）2·6H2O gave rise to two isomorphous mononuclear coordination complexes, namely, [CoL2（H2O）4] （1） and [NiL2（H2O）4] （2）. Both compounds were characterized by IR spectroscopy and single-crystal X-ray diffraction. X-ray crystallographic analyses reveal that they crystallize in monoclinic, space group P21/n. In the crystal structures of these two complexes, only one nitrogen atom of L coordinates to the metal center, and neither carboxylate group nor another nitrogen atom of L links to Co（Ⅱ） or Ni（Ⅱ）. 2D Layers with significant hydrogen bonds can be observed, and they are further linked by L to form a 3D supramolecular network. Nitrogen atoms are not involved in forming hydrogen bonds, but carboxylic groups of the ligands play an important role in the configuration of this hydrogen-bond layer.

关 键 词：crystal structure hydrogen bond cobalt complex nickel complex 

分 类 号：O621.2[理学—有机化学]