Pentacarbonyl-1κ2C,2κ3C-[(diphenylphosphoryl)diphenylphosphane-1κP]-μ-ethane-1,2-dithiolato-1:2κ4S,S′:S,S′-diiron(I)(Fe—Fe)

The dinuclear title compound, [Fe2(C2H4S2)(C24H20OP2)(CO)5] or (μ-SCH2CH2S-μ)Fe2(CO)5[Ph2PP(O)Ph2], contains a butterfly-shaped Fe2S2 core in which the Fe...Fe separation is 2.5275 (6) Å. One of the Fe atoms is also coordinated to three carbonyl ligands and the other to two carbonyl ligands and one phosphane ligand [Ph2PP(O)Ph2]. Both Fe-atom geometries could be described as grossly distorted octahedral and the Ph2PP(O)Ph2 ligand lies trans to the Fe...Fe link