title: catena-Poly[[[diaqua-copper(II)]-bis-[μ-1,1'-(butane-1,4-di-yl)diimidazole-κN:N]] dinitrate].
abstract: In the title compound, {[Cu(C(10)H(14)N(4))(2)(H(2)O)(2)](NO(3))(2)}(n), the Cu(II) ion lies on an inversion center and is six-coordinated in an octa-hedral environment by four N atoms from four different 1,1'-butane-1,4-diyldiimidazole ligands and two O atoms from the two water mol-ecules. Bridging by the ligands results in a ribbon structure. Adjacent ribbons are linked to the nitrate anions via O-H⋯O hydrogen bonds, forming layers. One nitrate O atom is disordered equally over two positions.
authors.affiliation: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Wang
authors.forename: Jin-Feng
authors.initials: JF
authors.lastname: Wang
authors.forename: Xiao-Yang
authors.initials: XY
authors.lastname: Liu