[μ-3-(Methyl­sulfan­yl)benzene-1,2-di­thiol­ato-1:2κ⁴S,S′:S,S′]bis­[tri­carbonyl­iron(I)]

The title compound, [Fe₂(C₇H₆S₃)(CO)₆], was prepared as a biomimic for the active site of [FeFe]-hydrogenases. The central Fe₂S₂ core is in a butterfly conformation and each Fe^I atom has a pseudo-square-pyramidal coordination by three O atoms and two S atoms. The Fe—Fe distance is 2.471 (2) Å and the dihedral angle between the two Fe—S—Fe planes is 78.96 (7)°. The least-squares plane through the –S(C₇H₆S)S– bridge nearly bis­ects the mol­ecular structure: except for the two Fe(CO)₃ units, all atoms are in this plane with an average deviation from the plane of 0.028 (3) Å. In the crystal, the mol­ecules are linked into chains along [001] by C—H...π(arene) inter­actions.