Undecacarbonyl-μ 2 -methanethiolato-μ 2 -[(pyridin-2-yl)methanethiolato]-μ 4 -sulfido-tetrairon(II)(2 Fe — Fe )

The title compound, [Fe4(C6H6NS)(CH3S)S(CO)11], com­prises two butterfly-shaped sub-cluster cores, Fe2S2N and Fe2S2, joined together by a spiro-type μ4-S atom. The (pyridin-2-yl)methane­thiol­ate ligand is attached to the Fe2(CO)5 unit in a μ-κN:κ2 S mode, and the methane­thiol­ate ligand is coordinated to the Fe2(CO)6 unit in a μ-κ2 S fashion.