SYNTHESIS AND CHARACTERIZATION OF NOVEL BINUCLEATING COMPOUNDS

Novel doubly bidentate Schiff base and bis-carboxyamide ligands were p repared by condensing 4,4'-diaminodiphenylsulphone with salicylaldehyd e/phenylglyoxal/maleic anhydride. These were then reacted with Cu(II), Co(II), NI(II) and Fe(II) salts to form their respective complexes. T he complexes are dark coloured, high melting substances insoluble in c ommon organic solvents. They have been characterised based on their co mposition, UV-visible, infrared and ESR spectral data, magnetic suscep tibility and thermal studies. In the light of the results obtained, st ructures of the complexes have been proposed.