SYNTHESIS AND SPECTRAL CHARACTERIZATION OF COPPER(II), NICKEL(II), COBALT(II), OXOVANADIUM(IV) AND RUTHENIUM(II) COMPLEXES OF SOME CONJUGATED 2-HYDROXYACETOPHENONES

A few metal complexes of the type ML(2)nB [where M=Cu(II), Ni(II), Co( II) and VO(II); ydroxy-omega-(2'-furylacryloyl)-acetophenone(HFA); B=H 2O; n=0,2] and Ru(II) complexes of 2=hydroxy-omega-(4-X-cinnamoyl)acet ophenones (HXCA) [where X=H, Cl, Me or OMe] have been prepared and cha racterized by elemental analysis, IR, electronic, and ESR spectra and magnetic susceptibility studies. The ligands coordinate through carbon yl and enolic oxygens. From the ESR spectra it is observed that copper (II) and vanadyl(IV) complexes are monomers.