SYNTHESIS AND CHARACTERIZATION OF NEW MIXED-LIGAND COMPLEXES OF RUTHENIUM(II) CONTAINING TRIPHENYLPHOSPHINE AND 2'-HYDROXYCHALCONES

A few hexacoordinated ruthenium(II) complexes of the type [RuCl(CO) (L L') (PPh3)2] and [RuCl(CO) (LL') (B) (PPh3)] (where HLL' = 2'-hydroxyc halcone, 2'-hydroxy-4-methoxychalcone, 2'-hydroxy-3,4-dimethoxychalcon e and B = pyridine(Py), piperidine(Pip), morpholine (Morph)) have been synthesised and characterized on the basis of their analytical and sp ectral data (I R, electronic and H-1 NMR). In all these complexes, the 2'-hydroxychalcones behave as a uninegative bidentate (OO-) chelating ligand.