title: Bis(2,2'-biimidazole-κN,N')bis-(2-bromo-fumarato-κO)copper(II).
abstract: In the title compound, [Cu(C(4)H(2)BrO(4))(2)(C(6)H(6)N(4))(2)], the central Cu(II) atom lies on an inversion center and is six-coordinated in an octahedral geometry by four N atoms from two chelating biimidazole mol-ecules in the equatorial plane and two O atoms from two 2-bromo-fumarate ligands in the axial positions. O-H⋯O, N-H⋯O and C-H⋯O hydrogen bonds lead to a three-dimensional network.
authors.affiliation: State Key Laboratory, Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
authors.forename: Ying-Tao
authors.initials: YT
authors.lastname: Ren
authors.forename: Hong-Ze
authors.initials: HZ
authors.lastname: Liang
authors.forename: Dan-Yi
authors.initials: DY
authors.lastname: Wei