KINETICS AND MECHANISTIC STUDY OF RUTHENIUM(III)-CATALYSED OXIDATION OF BIS(2,2',6',2'-TERPYRIDINE)IRON(II) BY BROMATE IN ACETATE BUFFERS

摘要

The kinetics of rathenium(III)-catalysed oxidation reaction of bis(2,2',6',2"-ter-pyridine)iron(II) by bromate in acetate buffers in the pH range 3.6-5.6 was studied spectrophotometrically. The reaction exhibits first order each in [substrate], [oxidant] and [ruthenium(III)]. Hydrogen ion has no significant effect and ionic strength increases the rate of the reaction. A suitable mechanism has been proposed to explain the kinetic data.