Bis[1,2-bis­(meth­oxy­carbon­yl)ethene-1,2-dithiol­ato-κ(2) S,S′]bis­(η(5)-penta­methyl­cyclo­penta­dien­yl)tetra-μ(3)-sulfido-tetra­iron(4 Fe–Fe) hexa­fluoridophosphate

The asymmetric unit of the title compound, [Fe(4)(C(6)H(6)O(4)S(2))(2)(C(10)H(15))(2)S(4)]PF(6), contains two different complex cations and two PF(6) (−) anions. The two complex cations have similar conformations with the butterfly-like Fe(4)S(4) core surrounded by two penta­methyl­cyclo­penta­dienyl ligands and the S atoms of two dithiol­ate ligands. In each Fe(4)S(4) core, there are four short Fe—Fe and two long Fe⋯Fe contacts, suggesting bonding and non-bonding inter­actions, respectively. The Fe—S distances range from 2.1287 (13) to 2.2706 (16) Å for one and from 2.1233 (13) to 2.2650 (16) Å for the other Fe(4)S(4) core. The Fe—S distances involving the dithiol­ate ligands are in a more narrow range [2.1764 (16)–2.1874 (13) Å for one and 2.1743 (14)–2.1779 (16) Å for the other cation]. There are no significant inter­actions between cations and anions.