Wang Feng-Qin, Lu Fan-Li, Wei Bin, Zhao Yong-Nan
College of Materials and Chemical Engineering, and Key Laboratory of Hollow Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin, People's Republic of China.
Acta Crystallogr C. 2009 Jan;65(Pt 1):m42-4. doi: 10.1107/S0108270108041504. Epub 2008 Dec 23.
The novel title complex, {[Cu(3)(C(8)H(3)NO(6))(2)(OH)(2)(H(2)O)(6)].2H(2)O}(n), has a one-dimensional polymeric double chain structure where the three Cu atoms are linked by mu(2)-OH and mu(2)-H(2)O groups, and these trinuclear centres are bridged by two 3-nitrophthalate ligands. The asymmetric unit contains one and a half crystallographically independent Cu atoms (one lying on a centre of inversion), both coordinated by six O atoms and exhibiting distorted octahedral coordination geometries, but with different coordination environments. Each 3-nitrophthalate ligand connects to three Cu atoms through two O atoms of one carboxylate group and one O atom of the nitro group. The remaining carboxylate group is free and is involved in intrachain hydrogen bonds, reinforcing the chain linkage.
新型标题配合物{[Cu(3)(C(8)H(3)NO(6))(2)(OH)(2)(H(2)O)(6)].2H(2)O}(n)具有一维聚合双链结构，其中三个铜原子通过μ(2)-OH和μ(2)-H(2)O基团相连，这些三核中心由两个3-硝基邻苯二甲酸酯配体桥连。不对称单元包含一个半晶体学独立的铜原子（一个位于对称中心），二者均由六个氧原子配位并呈现扭曲的八面体配位几何构型，但配位环境不同。每个3-硝基邻苯二甲酸酯配体通过一个羧基的两个氧原子和硝基的一个氧原子与三个铜原子相连。其余的羧基是游离的，参与链内氢键形成，加强了链的连接。
