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Acta Cryst. (2013). E69, m181
[ doi:10.1107/S1600536813005564 ]

Bis[1,2-bis(ethoxycarbonyl)ethene-1,2-dithiolato-[kappa]2S,S']bis([eta]5-pentamethylcyclopentadienyl)tetra-[mu]3-sulfido-diiron(IV)diiron(III)(3 Fe-Fe)

S. Ito, N. Hisamichi, T. Takase and S. Inomata

Abstract: The title compound, [Fe4(C10H15)2(C8H10O4S2)2S4], contains a twisted Fe4S4 cubane-like core. A twofold rotation axis passes through the Fe4S4 core, completing the coordination of the four Fe atoms with two pentamethylcyclopentadienyl ligands and two chelating dithiolate ligands. There are three short Fe-Fe and three long Fe...Fe contacts in the Fe4S4 core, suggesting bonding and non-bonding interactions, respectively. The Fe-S bonds in the Fe4S4 core range from 2.1523 (5) to 2.2667 (6) Å and are somewhat longer than the Fe-S bonds involving the dithiolate ligand.

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