Synthesis and Crystal Structure of a Novel Heterometallic Complex [Na_2Cu_2Gd_2(pdc)_4(H_2O)_(14)·2H_2O]  

作　　者：王燕 郭翠莲 郑和根 沈应中 

机构地区：[1]Applied Chemistry Department, School of Material Science & Engineering, Nanjing University of Aeronautics & Astronautics [2]Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, Nanjing University

出　　处：《Chinese Journal of Structural Chemistry》2009年第1期94-98,共5页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China (No 20571039);National Basic Research Program of China (2007CB925103);National 863 Research Project (2006 A03Z219);Natural Science Foundation of Jiangsu Province (BK2007199);the State Postdoctoral Foundation of China (No 2006040932);the Postdoctoral Foundation of Jiangsu Province (No 0602008B)

摘　　要：A novel heterometallic complex [Na2Cu2Gd2（pdc）4（H2O）14·2H2O] （H3pdc = 1H- pyrazole-3,5-dicarboxylic acid） has been synthesized and characterized by 1R spectra, elemental analysis, and single-crystal X-ray analysis. The crystal belongs to the monoclinic system, space group P2 1/c with a = 7.9521（18）, b = 12.251（3）, c = 22.293（5） A, β = 110.173（5）°, V= 2038.5（8） A^3, Mr = 1388.13, Z = 2, F（000） = 1352, Dc = 2.261 g/cm^3,/2 = 4.380 mm^-1, the final R = 0.0409 and wR = 0.0622 for 2453 observed reflections with I 〉 2σ（I）. The structural analysis shows that the Na^I, Cu^II and Gd^II ions are linked together by two kinds of bridging ligands （pdc^3- and H2O） to form a main moiety [Na2Cu2Gd2（pdc）4（H2O）14], which can be regarded as a centrosymmetric dimmer of [NaCuGd（pdc）2（H2O）7]. Many hydrogen bonds exist in the complex to build a 3D supramolecular framework.A novel heterometallic complex [Na2Cu2Gd2（pdc）4（H2O）14·2H2O] （H3pdc = 1H- pyrazole-3,5-dicarboxylic acid） has been synthesized and characterized by 1R spectra, elemental analysis, and single-crystal X-ray analysis. The crystal belongs to the monoclinic system, space group P2 1/c with a = 7.9521（18）, b = 12.251（3）, c = 22.293（5） A, β = 110.173（5）°, V= 2038.5（8） A^3, Mr = 1388.13, Z = 2, F（000） = 1352, Dc = 2.261 g/cm^3,/2 = 4.380 mm^-1, the final R = 0.0409 and wR = 0.0622 for 2453 observed reflections with I 〉 2σ（I）. The structural analysis shows that the Na^I, Cu^II and Gd^II ions are linked together by two kinds of bridging ligands （pdc^3- and H2O） to form a main moiety [Na2Cu2Gd2（pdc）4（H2O）14], which can be regarded as a centrosymmetric dimmer of [NaCuGd（pdc）2（H2O）7]. Many hydrogen bonds exist in the complex to build a 3D supramolecular framework.

关 键 词：COPPER GADOLINIUM heterornetallic complex crystal structure 

分 类 号：O627[理学—有机化学]