Crystal structure of tetra-μ-acetato-bis­[(5-amino-2-methyl­sulfanyl-1,3,4-thia­diazole-κN (1))copper(II)]

The reaction of 2-methyl­thio-5-amino-1,3,4-thia­diazole (Me-SNTD; C(3)H(5)N(3)S(2)) with copper(II) acetate monohydrate [Cu(OAc)(2)·H(2)O; C(4)H(8)CuO(5)] resulted in the formation of the title binuclear compound, [Cu(2)(C(2)H(3)O(2))(4)(C(3)H(5)N(3)S(2))(2)] or [Cu(2)(OAc)(4)(Me-SNTD)(2)]. The structure has triclinic (P [Image: see text]) symmetry with a crystallographic inversion centre located at the midpoint of the line connecting the Cu atoms in the dimer. These two Cu atoms of the dimer [Cu⋯Cu = 2.6727 (6) Å] are held together by four carboxyl­ate groups. Each Cu atom is further coordinated to the N atom of an Me-SNTD mol­ecule and exhibits a Jahn–Teller-distorted octa­hedral geometry. The dimers are connected into infinite chains by hydrogen bonds between the NH (Me-SNTD) and the carboxyl­ate groups of neighbouring mol­ecules, generating an R (2) (2)(12) ring motif. The mol­ecules are further linked by C—H⋯π inter­actions between the thia­diazole rings and the methyl groups of the acetate units.