Two Novel Lanthanide Coordination Polymers with Differently Bridging Pyridine-2,4,6-tricarboxylate Ligand  

作　　者：CHEN Zi-yun PENG Meng-xia 

机构地区：[1]Department of Chemistry, Jiaying University, Meizhou 514015, P. R. China

出　　处：《Chemical Research in Chinese Universities》2009年第6期796-800,共5页高等学校化学研究（英文版）

基　　金：Supported by the Scientific and Technological Project of Guangdong Province,China(No.2006B36703005)

摘　　要：Two new lanthanide-pyridinetricarboxylic complexes formulated as [Lu（pyta）（H2O）3]（1） and [La（pyta）· （H2O）2]-1.SH2O（2） were synthesized through hydrothermal reactions of LuC13 or La（NO3）y6H2O with pyridine-2,4,6-tricarboxylic acid（H3pyta）, respectively, and characterized by X-ray crystallography. Complex 1 crystal- lized in the monoclinic system with space group P21/n, a=1.01930（12） nm, b=0.73423（9） nm, c=1.45449（17） Mm, β=94.734（2）° V=1.0848（2） nm3, Z=4. Complex 2 crystallized in the monoclinic system with space group P21/c, a=0.68474（8） nm, b=1.20982（15） nm, c=1.36063（17） nm, β=99.823（2）°, V=l.1106（2） nm3, Z=4. The overall structure of complex 1 consists of 2D binuclear Lu2（pyta）4-based grid coordination layers which are further extended into a 3D supramolecular architecture via hydrogen bonding interactions. With different coordination modes of the pyta ligand, complex 2 is a 3D porous network comprised of La-carboxylate framework.Two new lanthanide-pyridinetricarboxylic complexes formulated as [Lu（pyta）（H2O）3]（1） and [La（pyta）· （H2O）2]-1.SH2O（2） were synthesized through hydrothermal reactions of LuC13 or La（NO3）y6H2O with pyridine-2,4,6-tricarboxylic acid（H3pyta）, respectively, and characterized by X-ray crystallography. Complex 1 crystal- lized in the monoclinic system with space group P21/n, a=1.01930（12） nm, b=0.73423（9） nm, c=1.45449（17） Mm, β=94.734（2）° V=1.0848（2） nm3, Z=4. Complex 2 crystallized in the monoclinic system with space group P21/c, a=0.68474（8） nm, b=1.20982（15） nm, c=1.36063（17） nm, β=99.823（2）°, V=l.1106（2） nm3, Z=4. The overall structure of complex 1 consists of 2D binuclear Lu2（pyta）4-based grid coordination layers which are further extended into a 3D supramolecular architecture via hydrogen bonding interactions. With different coordination modes of the pyta ligand, complex 2 is a 3D porous network comprised of La-carboxylate framework.

关 键 词：Pyridine-2 4 6-tricarboxylic acid Lu（Ⅲ） La（Ⅲ） Hydrothermal method 

分 类 号：O641.4[理学—物理化学] O614.121[理学—化学]