Synthesis and Crystal Structure of a Novel Heterometallic Complex [Na_2Cu_2Gd_2(pdc)_4(H_2O)_(14)·2H_2O] 被引量：1

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

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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.

作者王燕郭翠莲郑和根沈应中

机构地区 Applied Chemistry Department Coordination Chemistry Institute

出处《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 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)

关键词 COPPER GADOLINIUM heterornetallic complex crystal structure copper, gadolinium, heterornetallic complex, crystal structure

分类号 O627 [理学—有机化学]

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