trans -Di-chlorido-bis-(secnidazole-κ N 3 )copper(II).

The use of acetic acid (HOAc) in a reaction between CuCl 2 ·2H 2 O and secnid-azole, an active pharmaceutical ingredient useful in the treatment against a variety of anaerobic Gram-positive and Gram-negative bacteria, affords the title complex, [CuCl 2 (C 7 H 11 N 3 O 3 ) 2 ]. This compound was previously synthesized using ethanol as solvent, although its crystal structure was not reported [Betanzos-Lara et al. (2013 ▸). Inorg. Chim. Acta , 397 , 94-100]. In the mol-ecular complex, the Cu 2+ cation is situated at an inversion centre and displays a square-planar coordination environment. There is a hydrogen-bonded framework based on inter-molecular O-H⋯Cl inter-actions, characterized by H⋯Cl separations of 2.28 (4) Å and O-H⋯Cl angles of 175 (3)°. The resulting supra-molecular network is based on R 2 2 (18) ring motifs, forming chains in the [010] direction.