Crystal structure of -poly[[[bis-(1-benzyl-imidazole-κ)copper(II)]-μ-sulfato-κ :'-[tetra-kis-(1-benzyl-imidazole-κ)copper(II)]-μ-sulfato-κ :'] ,-di-methyl-formamide disolvate dihydrate].

The title one-dimensional copper(II) coordination polymer, {[Cu(SO)(CHN)]·CHNO·HO} or {[Cu(bzi)(μ-OSO)]·HO·DMF} (bzi = 1-benz-yl-imidazole, CHN; DMF = ,-di-methyl-formamide, CHNO), is constructed by monodentate bzi ligands and bridging sulfate anions, leading to chains propagating parallel to the axis. Within a chain, there are two crystallographic independent Cu ions, each with site symmetry , which form [CuNO] and [CuNO] polyhedra alternating along the chain direction. The crystal structure is consolidated by weak hydrogen-bonding, C-H⋯π and π-π inter-actions, leading to the formation of a three-dimensional supra-molecular network.