An efficient synthesis and in vitro antibacterial evaluation of ruthenium-quinolinol complexes.A series of ruthenium-quinolinol complexes were synthesized using a simple and effective pathway and their in vitro antibacterial activity against various resistant gram-positive and gram-negative bacteria were evaluated.  It was established that compound [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3b) & [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3e) were significantly active against Staphylococcus aureus, Escherichia coli, Bacillus subtilis &Salmonella sp.  The structures of the new compounds were elucidated by the analysis of spectroscopic data.  The stability of complex [(η6-pcymene)RuCl(κ2-O,N-5,7-dibromo-HyQ)]·Cl (3b) was measured by UV spectroscopy & time dependent NMR spectroscopy.  Compound 3b also shows remarkable fluorescence.
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