μ4-Sulfido-bis­{(μ-2-furyl­methane­thiol­ato)bis­[tricarbonyl­iron](Fe—Fe)}

The title compound, [Fe4(C5H5OS)2S(CO)12], was prepared by the direct reaction of Fe3(CO)12 and 2-furyl­methane­thiol in tetra­hydro­furan. Desulfurization took place readily to form an Fe4S3 cluster. The mol­ecule consists of two similar [(μ-2-C4H3O—CH2S)Fe2(CO)6] moieties joined to a spiro-type four-coordinate μ4-S atom such that this bridging sulfur is tetra­hedrally coordinated to the four Fe atoms. In each diiron subcluster core, the 2-furyl­methane­thiol­ate ligand bridges the two Fe atoms.