Mixed ligand complexes of ruthenium(II) containing alpha , beta -unsaturated- beta -ketoaminesand their antibacterial activity

Hexacoordinated Ru super(II) complexes of the [RuX(CO)(PPh sub(3))(B)(LL')] type [X = Cl; B = PPh sub(3), pyridine (py), piperidine (pip) or morpholine (morph); LL' = alpha , beta -unsaturated- beta -ketoaminate] have been synthesised by reacting [RuHCl(CO)(PPh sub(3))(B)] (B = PPh sub(3), py, pip or morph) with the appropriate beta -ketoamine in a 1:1 molar ratio. The replacement of hydride ion and the triphenylphosphine group by a bidentate chelating ligand from the starting compounds occurs. The complexes were characterised by elemental analyses and spectral (i.r., electronic, super(1)H- and super(31)P-n.m.r.) data. Antibacterial activity were also tested for in these new complexes.