Facile and highly efficient light-induced PR3/CO ligand exchange: A novel approach to the synthesis of [(μ-SCH2NnPrCH2S)Fe2(CO)4(PR3)2]

A straightforward and efficient transformation of the Fe–S complex [(μ-SCH2NnPrCH2S)Fe2(CO)6] to its double phosphine coordinated analogues [(μ-SCH2NnPrCH2S)Fe2(CO)4(PR3)2] (R = Ph, Me) is described. The single crystal structure of the PPh3-disubstituted complex [(μ-SCH2NnPrCH2S)Fe2(CO)4(Ph3P)2] (3) showed that both of the phosphine ligands take an apical/apical instead of a basal/basal or an apical/basal configuration.