catena-Poly[[bis-(nitrato-κO,O')copper(II)]-μ-2,2'-(ethane-1,2-diyldithio)di-1,3,4-thia-diazole-κN:N]

Abstract

In the title compound, [Cu(NO(3))(2)(C(6)H(6)N(4)S(4))](n), the Cu(II) atom, occupying a crystallographic inversion centre, is six-coordinated by two N atoms of two 2,2'-[1,2-ethane-diyl-bis-(thio)]bis-[1,3,4-thia-diazole] ligands in trans positions, and four O atoms from two symmetry-related opposite nitrate anions, which are asymmetrically bonded, resulting in a strong distorted octa-hedral geometry of the central atom. The ethane group is equally disordered over two sites via another inversion centre. The bridging bidentate 2,2'-[1,2-ethanediylbis(thio)]bis-[1,3,4-thia-diazole] ligands link the Cu(II) centres into a one-dimensional chain. The chains are inter-connected via inter-molecular S⋯O inter-actions [3.044 (4) and 3.084 (5) Å] and weak C-H⋯O hydrogen bonds, generating a three-dimensional supra-molecular structure.

Fig. 1.

A view of the local coordination of the Cu(II) cation in the title compound. Displacement ellipsoids are drawn at the 30% probability level. The disordered ethane group was omitted for clarity. Symmetry codes: (A) (-x, -y, -z); (B) (1 - x, 1 - y, 1 - z); (C) (-1 + x, -1 + y, -1 + z).

Fig. 2.

A view of the polymeric chain in the title compound.

Fig. 3.

A view of the two-dimensional network, indicating the S···O interactions by dashed lines.

Fig. 4.

A view of the compound packing down the b axis.