Study of effect of substitution on ligands on the catalytic activity of ternary complexes

The ternary:complexes of Fe(III) and Mn(LI) with one bipyridyl or orthopnen anthroline and another newly synthesised tridentate mannich base of phenyl alanine and bromo salicylaldehyde, have been prepared and characterized by elemental analyses, spectral and electrochemical studies. These complexes w ere used as catalysts for the oxidation of the olefines, using PhlO as the oxidant. The results of the oxidation reactions were compared with that, us ing unsubstituted ligand complexes as catalysts. It has also been found tha t the present complexes are better catalysts. (C) 2000 Elsevier Science B.V . All rights reserved.