Bis(μ-cobaltoceniumseleno­late-1:2κ(2) Se:Se)bis[bis­(cobaltoceniumseleno­late-κSe)mercury(II)] tetra­kis­(hexa­fluorido­phosphate) aceto­nitrile disolvate

The title compound, [Co(6)Hg(2)(C(5)H(5))(6)(C(5)H(4)Se)(6)](PF(6))(4)·2CH(3)CN or [Hg(2)(CcSe)(6)][PF(6)](4)·2CH(3)CN (Cc = C(10)H(9)Co), was obtained as bright-orange needle-shaped crystals. It is a salt containing a tetra­cationic dimercury species with six cobaltoceniumseleno­late ligands, four hexa­fluorido­phosphate counter-ions and two aceto­nitrile solvent mol­ecules. The cation (point group [Image: see text] ) has a bi­tetra­hedral {Hg(2)Se(6)} core with two bridging Se atoms and four terminal Se atoms. [Image: see text]