Physico-Chemical Investigations on the Complexes of Mn(II), Fe(II), Ni(II), Cu(II) and Cd(II) with N-(5-bromosalicylidene)-5-bromoanthranilic Acid

Abstract

Mn(II), Fe(II), CoeII), Ni(II), Cu(II) and Cd(II) complexes of N-(5-bromosalicylidene)-5-bromoanthranilic acid have been synthesized and characterized on the basis of analytical data, IR and electronic spectral, magnetic measuremets and thermal studies. Thermal decomposition data of Co (II), Ni(II) and Cu(II) chelates have been analysed to obtain the energy and entropy of activation based on Coats-Redfern and Horowitz-Metzger equation. Thermal stabilities of the chelates under examination can be given as

                                                       [CoL(H₂O)₃] ≈ [NiL(H₂O)₃] < [Cu₂L₂]