Tetrakis(pentafluorobenzenethiolato-kappaS)(triphenylphosphine-kappaP)osmium(IV): a Z' = 3 structure with a supramolecular double-stranded backbone.

The title complex, [Os(C6F5S)4(C18H15P)], crystallizes with three independent molecules in the asymmetric unit. Two of these have very similar conformations, while in the third, the axial thiolate ligand has a rotation that differs by ca 21.5 degrees . The coordination around the metal atom is trigonal bipyramidal and the supramolecular structure involves an unusual double-stranded backbone.