title: Poly[[bis-(acetonitrile-κN)bis-[μ(2)-2,2'-(methyl-enedithio)bis-(1,3,4-thia-diazole)-κN:N]copper(II)] bis-(perchlorate) acetonitrile solvate].
abstract: In the title compound, {[Cu(C(5)H(4)N(4)S(4))(2)(C(2)H(3)N)(2)](ClO(4))(2)·C(2)H(3)N}(n), the Cu(II) atom occupies a crystallographic inversion centre and is six-coordinated by six N atoms of four symmetry-related 2,2'-(methyl-enedithio)bis-(1,3,4-thia-diazole) (L) ligands and two acetonitrile mol-ecules in a slightly distorted octa-hedral geometry. The ligand L adopts an N:N'-bidentate bridging mode in a trans configuration, bridging the Cu atoms via translation symmetry, forming a two-dimensional layer-like structure. The perchlorate ions serve as acceptors for inter-molecular C-H⋯O hydrogen bonds, which link the layers into a three-dimensional network. The ClO(4) (-) anion is disordered with an occupation ratio of 0.658:0.342.
authors.affiliation: College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, People's Republic of China.
authors.forename: Jian-Ge
authors.initials: JG
authors.lastname: Wang
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Qin
authors.forename: Pu-Zhou
authors.initials: PZ
authors.lastname: Hu