catena-Poly[[[bis­(nitrato-κO)copper(II)]-bis­[μ-1,3-bis­(imidazol-1-yl)-5-methyl­benzene-κ(2) N (3):N (3′)]] dihydrate]

In the title complex, {[Cu(NO(3))(2)(C(13)H(12)N(4))(2)]·2H(2)O}(n), the Cu(II) atom is located on a crystallographic center of symmetry and adopts an N(4)O(2) octa­hedral coordination geometry with four imidazole N atoms in the equatorial sites and two O atoms in the axial sites. The dihedral angles between the central benzene ring and the imidazole rings are 4.93 (11) and 46.08 (12)°. The 1,3-bis­(imidazol-1-yl)-5-methyl­benzene ligand is bis-monodentate, linking symmetry-related Cu(II) atoms into sheets in the bc plane. These sheets are further bridged into a three-dimensional supra­molecular structure by O—H⋯O and C—H⋯O hydrogen bonds.