μ-Propane-1,3-dithiolato-κ4S,S′:S,S′-bis[dicarbonyl(triphenylphosphane-κP)iron(II)](Fe—Fe)

Abstract

The title compound, [Fe2(C3H6S2)(C18H15P)2(CO)4], which might serve as an active-site model of [FeFe]-hydrogenase, contains two fused Fe/S/C/C/C/S six-membered rings, one of which has a chair conformation and the other a boat conformation. Each Fe atom is coordinated by two carbonyl ligands, a triphenylphosphane ligand and a bis-bidentate dithiolate ligand, and also forms an Fe—Fe bond [2.5167 (16) Å]. Together, the six bonded atoms form a very distorted octahedral arrangement.