Synthesis, catalytic and antibacterial activity of ruthenium complexes of 2,2' -dithiobis[N -(2-hydroxy -naphth-3-yl)benzamides]

Department of Chemistry. Faculty of Science. University of Mauritius, Reduit, Mauritius
E-mail : sabina@uom.ac.mu
Manuscript received 22 September 2003. received 18 February 2004. accepted 18 February 2004

Reaction of 2,2'-dithiobis[N-2-hydroxy-naphth-3-yl)benzamides] (1) with RuCl₃3H₂O, followed by addition of secondary ligands (L
= triphenylphosphine (PPh₃), 1,10-phenanthroline (Phen), pyridine (Py), 2,4-diaminotolucne (Diam)), yielded five binuclear metal
complexes (1a-e). All the compounds were chracterised through elemental analyses magnetic measurements and spectroscopy. Co·ordination was found to he through the carbonyl oxygen of amide and hydroxyl oxygen or naphthol in an octabedral environment.
1a-e were found to be effective catalysts for the oxidation of benzyl alcohol and cyclohexanol to benzaldehyde and cyclohexanon
in the presence of cooxidant NMO. All the synthesized complexes showed antibacterial properties.