Kinetics of reactions of catechol (o-dihydroxybenzene) and quinol (p-dihydroxybenzene) with oxidizing metal ions present in excess: the reactions with iron(III), vanadium(V), and thallium(III) in aqueous perchloric acid solution
The reactions of catechol with excesses of FeIII, VV, and TlIII ions and of quinol with an excess of VV have been studied by means of a stopped-flow technique in aqueous acid solution (HClO4) at 25·0 °C. Kinetic dependences on the reagent concentrations, different from those obtained in the presence of excess of the dihydroxybenzene, have been found for the reactions with FeIII and VV ions, while the same kinetic dependence has been found for the reaction with TlIII. Proposed schemes of reaction are discussed.