Palladium(II) complexes of aliphatic amines and their oxidation by chloramine-T in perchloric acid medium

The formation of palladium(II) complexes with aliphatic amines and their oxidation by chloramine-T in perchloric acid medium has been studied. The spectrophotometric studies showed the formation of 1:1 and 1:2 complexes between palladium(II) and amine in absence Of HClO4. An increase in [HClO4] in reaction mixture suppresses the complex formation and in presence of [HClO4] similar to 10(-3) mol dm(-3) only a 1:1 complex between palladium(II) and amine has been observed, The effect of Cl- on the complex formation has also been studied. Palladium (II)-catalyzed oxidation of these amines by chloramme-T showed a first-order dependence of rate with respect to each-oxidant, substrate, catalyst, and H+. The mechanism consistent with kinetic data for the oxidation process has been proposed in absence as well as in presence of initial [Cl-]. (C) 2002 Wiley Periodicals, Inc.