title: Bis(μ-biphenyl-2,2'-dicarboxyl-ato)bis-[aqua-(4,4'-dimethyl-2,2'-bipyridine-κN,N')copper(II)].
abstract: The mol-ecule of the title binuclear copper(II) complex, [Cu(2)(C(14)H(8)O(4))(2)(C(12)H(12)N(2))(2)(H(2)O)(2)], is bis-ected by a crystallographic twofold axis. Each Cu(II) atom is coordinated in a distorted octa-hedral geometry by three O atoms from two biphen-yl-2,2'-dicarboxyl-ate anions, one aqua O atom and two N atoms of a 4,4'-dimethyl-2,2'-bipyridine ligand. Intramolecular O-H⋯O hydrogen bonds between the coordinated water molecules and the carboxylate O atoms are also present.
authors.affiliation: Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China.
authors.forename: Xi-Yan
authors.initials: XY
authors.lastname: Dong
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Xu
authors.forename: Lei
authors.initials: L
authors.lastname: Yang