Ruthenium complexes of furan- and thiophene-thiolates: Structure of CpRu(dppe)SThi

Complexes of ruthenium containing 2-furan- and 2-thiophene-thiolates with phosphine ligands have been prepared and characterized. The bis(triphenylphosphine) complexes CpRu(PPh3)2SR (R = C4H3O: Fu (1a), C4H3S: Thi (1b)) were prepared by the reaction of thiolato anions (FuS− or ThiS−) with CpRu(PPh3)2Cl. The one-pot reaction of CpRu(PPh3)2Cl, thiolato anions and L ligands gave CpRu(L)SR (L = bis(diphenylphosphino)methane: dppm (2); bis(diphenylphosphino)ethane: dppe (3)). The newly prepared complexes have been characterized by spectroscopic techniques (FT-IR, 1H NMR and 31P NMR) and by elemental analysis. The crystal structure of CpRu(dppe)SThi (3b) has been determined by X-ray diffraction.