Mixed ligand complexes of ruthenium (III) containing N,O/N,S donor ligands and triphenylphosphine or triphenylarsine

Several new ruthenium(III) complexes of the type [RuX(LL')(EPh3)3] [X Cl or Br; LL' = Schiff bases, namely, bis(aminophenol)glyoxal (apg), bis(aminophenol)benzil (apb) or bis(aminothiol)glyoxal (atg); E = P or As] have been prepared by the reactions of [RuX3(EPh3)3] (X = Cl or Br; E = P or As) or [RuBr3(PPh3)2(MeOH)] with Schiff bases. In all the reactions the Schiff bases behave as binegative tetradentate ligands. The new complexes have been characterised by elemental analyses, spectral (IR, electronic, EPR) and cyclic voltammetry. Based on these studies, an octahedral structure has been proposed for all the complexes. The antifungal activities of some of the ligands and their complexes have also been carried out. (author)