Mixed Ligand Complexes of Chromium(III), Manganese(III), Iron(III) And Cobalt(III) With Dipicolinic Acid and Some Monobasic Bidentate Nitrogen, Oxygen Donor Ligands

Abstract

The mixed-ligand complexes of trivalent chromium, manganese, iron and cobalt of type [M(dipic)(N-O)] nH₂O (Where dipicH₂ = pyridine-2, 6-dicarboxylic acid or dipicolinic acid; N-OH represents different nitrogen, oxygen donor ligands viz., picolinic acid, nicotinic acid, isonicotinic acid, glycine, aminophenol, o-aminobenzoic acid or p-aminobenzoic acid) have been prepared and characterized on the basis of elemental analyses, magnetic susceptibility measurements and spectral (electronic and infrared) data. A polymeric six-coordinate structure has been assigned for these complexes.