IMPROVEMENT AND ESTIMATION OF PRECISION IN THE CYCLIC VOLTAMMETRIC DETERMINATION OF RATE CONSTANTS AND ACTIVATION PARAMETERS OF COUPLED HOMOGENEOUS 2ND-ORDER REACTIONS - REACTION OF N-BUTYL BROMIDE WITH ANTHRACENE ANION RADICALS

Variations of the single scan peak current with scan rate and concentration offer a reliable source of data for the determination of the rate constants of second order reactions involving the substrate and an electrogenerated reagent. With the title reaction, the rate constants were determined with a relative precision ranging between 3% and 10%. Activation parameters were estimated with a precision of +/- 2.4 kJ mol-1 for the activation energy and of 8 J K-1 mol-1 for the activation entropy.