Crystal structure of [μ2-1,1′-bis(diphenylphosphanyl)ferrocene-κ2P:P′]bis[(pyrrolidine-1-carbodithioato-κS)gold(I)]

The asymmetric unit of the title compound, {(C34H28FeP2)[Au(C5H8NS2)]2}, comprises half a molecule, with the full molecule being generated by the application of a centre of inversion. The independent AuI atom is coordinated by thiolate S and phosphane P atoms that define an approximate linear geometry [S—Au—P = 169.35 (3)°]. The deviation from the ideal linear is traced to the close approach of the (intramolecular) non-coordinating thione S atom [Au...S = 3.1538 (8) Å]. Supramolecular layers parallel to (100) feature in the crystal packing, being sustained by phenyl–thione C—H...S interactions, with the non-coordinating thione S atom in the role of a dual acceptor. Layers stack with no specific interactions between them.