Crystal structure of bis(μ-{2-[(5-bromo-2-oxido­benzyl­idene)amino]­eth­yl}sulfanido-κ(3) N,O,S){2,2′-[(3,4-di­thia­hexane-1,6-di­yl)bis­(nitrilo­methanylyl­idene)]bis­(4-bromo­phenolato)-κ(4) O,N,N′,O′}dicobalt(III) di­methyl­formamide monosolvate

The title binuclear Co(III) complex, [Co(2)(C(9)H(8)BrNOS)(2)(C(18)H(16)Br(2)N(2)O(2)S(2))]·C(3)H(7)NO, with a Schiff base ligand formed in situ from cyste­amine (2-amino­ethane­thiol) and 5-bromo­salicyl­aldehyde crystallizes in the space group P2(1). It was found that during the synthesis the ligand undergoes spontaneous oxidation, forming the new ligand H(2) L′ having an S—S bond. Thus, the asymmetric unit consists of one Co(2)(L)(2)(L′) mol­ecule and one DMF solvent mol­ecule. Each Co(III) ion has a slightly distorted octa­hedral S(2)N(2)O(2) coordination geometry. In the crystal, the components are linked into a three-dimensional network by several S⋯ Br, C⋯ Br, C—H⋯Br, short S⋯C (essentially shorter than the sum of the van der Waals radii for the atoms involved) contacts as well by weak C—H⋯O hydrogen bonds. The crystal studied was refined as an inversion twin.