Four new transition metal complexes, [M(PPh)(L)]CHOH (M = Ni(II) (1), Pd(II) (2)) [Pt (PPh)(HL)]Cl (3) and [Ru(CO)(PPh)(L)] (4) (HL = 2,4-dihydroxybenzaldehyde-S-methyldithiocarbazate, PPh = triphenylphosphine) have been synthesized and characterized by elemental analyses (C, H, N), FTIR, NMR (H, P), ESI-MS and UV-visible spectroscopy.