Crystal structure of bis(μ-{2-(5-bromo-2-oxido­benzyl­idene)amino­eth­yl}sulfanido-κ3NOS){22′-(34-di­thia­hexane-16-di­yl)bis­(nitrilo­methanylyl­idene)bis­(4-bromo­phenolato)-κ4ONN′O′}dicobalt(III) di­methyl­formamide monosolvate

摘要

The title binuclear Co^III complex, [Co2(C9H8BrNOS)2(C18H16Br2N2O2S2)]·C3H7NO, with a Schiff base ligand formed in situ from cyste­amine (2-amino­ethane­thiol) and 5-bromo­salicyl­aldehyde crystallizes in the space group P21. It was found that during the synthesis the ligand undergoes spontaneous oxidation, forming the new ligand H2 L′ having an S—S bond. Thus, the asymmetric unit consists of one Co2(L)2(L′) mol­ecule and one DMF solvent mol­ecule. Each Co^III ion has a slightly distorted octa­hedral S₂N₂O₂ 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.