title: catena-Poly[[(3-methyl-pyridine)-copper(I)]-μ-cyanido-copper(I)-μ-cyanido].
abstract: In the title complex, [Cu(2)(CN)(2)(C(6)H(7)N)](n), there are two copper atoms with different coordination environments. One Cu atom (Cu1) is linked to the two cyanide ligands, one N atom from a pyridine ring while the other (Cu2) is coordinated by the two cyanide ligands in a slightly distorted tetra-hedral geometry and linked to Cu1, forming a triangular coordination environment. The Cu atoms are bridged by bidentate cyanide ligands, forming an infinite Cu-CN chain. One cyanide ligand is equally disordered over two sets of sites, exchanging C and N atoms coordinated to both metal atoms. However, one cyanide group is not disordered and it coordinates to Cu1 via the N atom whereas its C-atom counterpart coordinates Cu2. The 3-methyl-pyridine (3MP) ligand coordinates through the N atom to Cu1 as a terminal ligand, which originates from decyanation of 3-pyridyl-acetonitrile under hydro-thermal conditions. Adjacent Cu-CN chains are inter-connected through Cu⋯Cu inter-actions [2.8364 (10) Å], forming a three-dimensional framework.
authors.affiliation: School of Chemistry and Environment, South China Nomal University, Guangzhou 510006,  People's Republic of China.
authors.forename: Jin-Biao
authors.initials: JB
authors.lastname: Cai
authors.forename: Ting-Ting
authors.initials: TT
authors.lastname: Chen
authors.forename: Ze-Ying
authors.initials: ZY
authors.lastname: Xie
authors.forename: Hong
authors.initials: H
authors.lastname: Deng
references.citation: Inorg Chem. 2007 Dec 10;46(25):10534-8
references.pmid: 17990870
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Chem Commun (Camb). 2010 Jul 7;46(25):4565-7
references.pmid: 20449513