Tri-μ-ethanethiol­ato-bis­{[η(5)-1,2,3,4-tetra­methyl-5-(trimethyl­silyl)cyclo­penta­dien­yl]iron(II,III)}(Fe(II)–Fe(III))

The title complex, [Fe(2)(C(2)H(5)S)(3)(C(12)H(21)Si)(2)], has an unusual Fe(2)S(3) core. The two 1,2,3,4-tetra­methyl-5-(trimethyl­silyl)cyclo­penta­dienyl (Cp′) ligands coordinate to the Fe atoms with their C(5) planes perpendicular [dihedral angles = 88.23 (7) and 88.55 (7)°] to the Fe—Fe vector, building two Cp′Fe subunits. These two subunits are bridged by three thiol­ate ligands. There are no significant differences in the coordination geometries between the two Fe atoms. The short Fe—Fe distance of 2.7842 (5) Å is clear evidence of an inter­metallic bond. Such a diiron–sulfur structure might act as a model of active sites in some metalloproteins.