Abstract Reactions of 2-(arylazo)aniline, HL-NH 2 [H represents the dissociable protons upon complexation and HL-NH 2 is p-RC 6H 4N NC 6H 4-NH 2; R = H for HL 1-NH 2; CH 3 for HL 2-NH 2 and Cl for HL 3-NH 2] with Ru(H)(CO)(PPh 3) 3Cl and Ru(CO) 3(PPh 3) 2 afforded products of compositions [(HL-NH)Ru(CO)Cl(PPh 3) 2] and [(L-NH)Ru(PPh 3) 2(CO)], respectively. All the complexes were characterized unequivocally. The X-ray structures of the complexes 4c and 5c have been determined. The cyclic volatammograms exhibited one reversible oxidative response in the range of 0.56–0.16 V versus SCE for [(L-NH)Ru(PPh 3) 2(CO)] and a quasi reversible oxidative response within 0.56–0.70 V versus SCE for [(HL-NH)Ru(CO)Cl(PPh 3) 2]. The conversion of ketones to corresponding alcohols has been studied in presence of newly synthesized ruthenium complexes.