Studies on the synthesis, spectra, catalytic and antibacterial activities of binuclear ruthenium(II) complexes.
A new series of stable binuclear ruthenium(II) carbonyl complexes of the general formula [{RuX(CO)(EPh(3))(2)}(2)L] (where X=H or Cl; E=P or As and L=dibasic tetradentate diacetyl resorcinol (H(2)-DAR)) have been synthesised by reacting ruthenium(II) starting complexes [RuHX(CO)(EPh(3))(3)] (where X=H or Cl; E=P or As) and 4,6-diacetylresorcinol (H(2)-DAR) ligand in benzene medium. The structure of the new binuclear ruthenium(II) carbonyl complexes was established using elemental analysis, spectra (FT-IR, UV-vis and (1)H NMR), electrochemical and thermal studies. In these reactions, the 4,6-diacetylresorcinol (H(2)-DAR) ligand behaves as a binegative tetradentate chelating ligand coordinating through O,O atoms of both the carbonyl and phenolic C-O groups by replacing a molecule of PPh(3)/AsPh(3) and a hydride ion from the starting complexes. Further, all these complexes were also employed as new catalysts for the oxidation of primary and secondary alcohols in the presence of N-methylmorpholine-N-oxide (NMO) as a more viable co-oxidant. The free ligand and their metal complexes have also been screened for their antibacterial activity against the growth of gram +ve and gram -ve bacterial cultures.
Department of Chemistry, Bharathiar University, Coimbatore 641 046, India.
P
P
Krishnamoorthy
P
P
Sathyadevi
K
K
Deepa
N
N
Dharmaraj
D000438:Alcohols / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D002384:Catalysis / Q000187:drug effects; D004563:Electrochemistry; D004583:Electrons; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D010084:Oxidation-Reduction / Q000187:drug effects; D012118:Resorcinols / Q000737:chemistry; D012428:Ruthenium / Q000737:chemistry* / Q000494:pharmacology*; D013055:Spectrophotometry, Infrared; D013818:Thermogravimetry
C526645:4,6-diacetylresorcinol; D000438:Alcohols; D000900:Anti-Bacterial Agents; D008024:Ligands; D012118:Resorcinols; D012428:Ruthenium