Synthesis and Crystal Structure of a Two-dimensional Coordination Polymer [Cd(dym)(H_2O)_2(H_2O)]n with Cd_6 Hexagonal Macrometallocycle  

作　　者：邵允 李春霞 陈亚光 刘群 

机构地区：[1]Faculty of Chemistry, Northeast Normal University

出　　处：《Chinese Journal of Structural Chemistry》2006年第3期353-357,共5页结构化学（英文）

基　　金：This work was supported by the National Natural Science Foundation of China (No. 20272008)

摘　　要：A 2D lamellar metal-organic coordination polymer [2-（1,3）-dithian-2-ylidene malonate] diaquoicadmium（Ⅱ） hydrate, [Cd（dym）（H2O）2（H2O）], （dym = 2-（1,3）-dithian-2-ylidene malonate）, has been prepared by conventional solution reaction. The structure analysis suggests that the polymer crystallized in orthorhombic system with space group Pbca and the final R indices （I 〉2σ（I））： R1 = 0.0236 and wR2= 0.0738. Crystal data： a = 12.6138（5）, b = 8.4528（3）, c = 22.5867（8） A°, V = 2409.8（15）A°^3, Z = 3, F（000） = 1520, Dc = 1.482 g/cm^3,μ（MoKα） = 0.990 mm^-1 and Mr= 384.69 g/mol. The Cd（Ⅱ） ion is in a disordered triangle prism environment. The Cd-O distances are in the range of 2.2643（14）-2.3641（15）A°. In the crystal, the Cd atoms are arranged at the comers of honeycomb-like hexagonal 24-membered macrometallacycle. There is a weak C-H...S interaction between the 1,3-dithiocyclohexyl groups of two adjacent dym ligands.A 2D lamellar metal-organic coordination polymer [2-（1,3）-dithian-2-ylidene malonate] diaquoicadmium（Ⅱ） hydrate, [Cd（dym）（H2O）2（H2O）], （dym = 2-（1,3）-dithian-2-ylidene malonate）, has been prepared by conventional solution reaction. The structure analysis suggests that the polymer crystallized in orthorhombic system with space group Pbca and the final R indices （I 〉2σ（I））： R1 = 0.0236 and wR2= 0.0738. Crystal data： a = 12.6138（5）, b = 8.4528（3）, c = 22.5867（8） A°, V = 2409.8（15）A°^3, Z = 3, F（000） = 1520, Dc = 1.482 g/cm^3,μ（MoKα） = 0.990 mm^-1 and Mr= 384.69 g/mol. The Cd（Ⅱ） ion is in a disordered triangle prism environment. The Cd-O distances are in the range of 2.2643（14）-2.3641（15）A°. In the crystal, the Cd atoms are arranged at the comers of honeycomb-like hexagonal 24-membered macrometallacycle. There is a weak C-H...S interaction between the 1,3-dithiocyclohexyl groups of two adjacent dym ligands.

关 键 词：coordination polymer CADMIUM macrometallacycle crystal structure 

分 类 号：O631.3[理学—高分子化学]