Wang Jun-Feng, Guo Wen-Jing, Deng Fan-Zheng
College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui, People's Republic of China.
Acta Crystallogr C. 2013 Nov;69(Pt 11):1328-31. doi: 10.1107/S0108270113027182. Epub 2013 Oct 9.
A novel three-dimensional Cd(II) complex, poly[aqua{μ2-1,4-bis[2-(pyridin-4-yl)ethenyl]benzene-κ(2)N:N'}[μ4-2,2'-(1,4-phenylene)diacetato-κ(4)O,O':O'',O''']cadmium(II)], [Cd(C10H8O4)(C20H16N2)(H2O)]n, has been prepared by hydrothermal assembly of Cd(NO3)2·4H2O, 1,4-bis[2-(pyridin-4-yl)ethenyl]benzene (1,4-bpeb) and 2,2'-(1,4-phenylene)diacetic acid (1,4-H2pda). Each Cd(II) centre is located on a twofold axis in a distorted pentagonal bipyramidal coordination environment formed by one O atom from a water molecule, which lies on the same twofold axis, four O atoms from two different 1,4-pda ligands and two N atoms from two different 1,4-bpeb ligands. The Cd(II) centres are bridged by the 1,4-bpeb and 1,4-pda ligands, which lie across centres of inversion. The three-dimensional net can be regarded as a diamondoid network by treating the Cd(II) atoms as nodes and the 1,4-bpeb and 1,4-pda ligands as linkers. The single net leaves voids that are filled by mutual interpenetration of four independent equivalent frameworks in a fivefold interpenetrating architecture.
通过水热组装硝酸镉四水合物（Cd(NO₃)₂·4H₂O）、1,4 - 双[2 - (吡啶 - 4 - 基)乙烯基]苯（1,4 - bpeb）和2,2' - (1,4 - 亚苯基)二乙酸（1,4 - H₂pda）制备了一种新型三维镉（II）配合物，聚[水合{μ₂ - 1,4 - 双[2 - (吡啶 - 4 - 基)乙烯基]苯 - κ(2)N:N'}[μ₄ - 2,2' - (1,4 - 亚苯基)二乙酸根 - κ(4)O,O':O'',O''']镉（II）]，[Cd(C₁₀H₈O₄)(C₂₀H₁₆N₂)(H₂O)]ₙ。每个镉（II）中心位于一个二重轴上，处于由一个来自水分子的氧原子（该水分子位于同一二重轴上）、来自两个不同的1,4 - pda配体的四个氧原子以及来自两个不同的1,4 - bpeb配体的两个氮原子形成的扭曲五角双锥配位环境中。镉（II）中心由1,4 - bpeb和1,4 - pda配体桥连，这些配体横跨对称中心。通过将镉（II）原子视为节点，1,4 - bpeb和1,4 - pda配体视为连接体，三维网络可被视为类金刚石网络。单一网络留下的空隙由四个独立等效框架以五重互穿结构相互穿插填充。
