Crystal structure of bis-(bis-{μ-3-methyl-3-[(4-nitro-2-oxido-benzyl-idene)amino]-propane-1,3-diolato}tris-[chlorido-(dimethyl sulfoxide)-iron(III)]) dimethyl sulfoxide hepta-solvate dihydrate.

The title compound, [Fe(CHNO)Cl(CHOS)]·7CHOS·2HO, was isolated accidentally from an Fe-NiCl·6HO-H-TEA-DMSO system [where H is the product of the condensation between -nitro-salicyl-aldehyde and 2-amino-2-methyl-propane-1,3-diol and dimethyl sulfoxide (DMSO), and TEA is triethylamine]. The structure is based on a trinuclear {Fe(μ-O)} core, with an angular arrangement of the Fe ions that can be explained by the geometrical restrictions of two bulky ligands, each coordinating to all of the metal cations.