Abstract
The kinetics of decomposition of the organo-thallic adduct formed in methanol between styrene and Tl(OAc)3, (C6H5—CH(OCH3)—CH2—Tl(OAc)2) has been studied in a water–methanol solvent. The reaction follows a first order rate law. The organo-thallic compound, RTl(OAc)2, is shown to be dissociated at low concentrations yielding two reactive species, RTlOH+ and RTl2+. The influence of acidity on the rate of decomposition shows that RTl2+ is much more reactive than RTiOH+. The kinetic parameters have been determined. The implication of the results on the rate-determining step of Tl(III) oxidation of styrene is discussed.
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