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Acta Cryst. (2009). E65, m1542 [ doi:10.1107/S1600536809045735 ]
![[mu]](/logos/entities/mu_rmgif.gif)
-ethanethiolato-bis{[![[eta]](/logos/entities/eta_rmgif.gif)
5-1,2,3,4-tetramethyl-5-(trimethylsilyl)cyclopentadienyl]iron(II,III)}(FeII-FeIII)Abstract: The title complex, [Fe2(C2H5S)3(C12H21Si)2], has an unusual Fe2S3 core. The two 1,2,3,4-tetramethyl-5-(trimethylsilyl)cyclopentadienyl (Cp') ligands coordinate to the Fe atoms with their C5 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.
Online 7 November 2009
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