Xiao Hong-Ping, Li Xin-Hua, Yuan Ji-Xin, Hu Mao-Lin
Department of Chemistry and Materials Science, Wenzhou Normal College, Wenzhou 325027, People's Republic of China.
Acta Crystallogr C. 2004 Feb;60(Pt 2):m63-4. doi: 10.1107/S0108270103028907. Epub 2004 Jan 17.
In the title complex, Cu(2)(C(10)H(2)O(8))(C(10)H(8)N(2))(2), the Cu(II) cation has a four-coordinated environment, completed by two carboxyl O atoms belonging to two 1,2,4,5-benzenetetracarboxylate anions (TCB(4-)) and two N atoms from one 2,2'-bipyridine (2,2'-bipy) ligand, forming a distorted square-planar geometry. The Cu(2,2'-bipy) moieties are bridged by TCB(4-) anions, which lie about inversion centres, forming an infinite one-dimensional coordination polymer with a double-chain structure along the a axis. A two-dimensional network structure is formed via a face-to-face pi-pi interaction between the 2,2'-bipy rings belonging to two adjacent double chains, at a distance of approximately 3.56 A.
