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Synthesis and characterization of copper (II), cobalt (II) and nickel (II) complexes with Schiff bases

A.Ramachandra, Nirdosh Patil, Fazlur Rahaman, V.H.Kulkarni, S.D.Angadi

A few complexes of Cu(II), Co(II) and Ni(II) have been prepared by reacting with their metal (II) chlorides with 2- (phenyl/4-methylphenylimino)-1H-indene-1, 3(2H)-dione and 2-[(2-hydroxyphenyl)imino]-1H-inene-1, 3(2H)- dione(Schiff bases) in alcoholic medium. All the chelates are coloured solids and are non-electrolytic in DMF and DMSO. Elemental analysis confirms to the 1:2-stoichiometry of the typeML2. The IR spectra of the ligands and the complexes suggest the involvement of o-hydroxy group, carbonyl group and azomethine group in bonding through oxygen and nitrogen atoms respectively. The electronic spectra and magnetic data suggest the octahedral and square planar configuration.