Kinetics of comproportionation of the bipyridilium salt p-cyanophenyl paraquat in propylene carbonate studied by rotating ring–disc electrodes

Abstract

The kinetics of the comproportionation reaction CPQ²⁺+ CPQ⁰→ 2CPQ⁺(CPQ is 1,1′-(p-cyanophenyl)-4,4′-bipyridilium) have been studied at a rotating ring–disc electrode (RRDE) in propylene carbonate solution. Some elaboration of the existing analysis is required to encompass comproportionation. The second-order rate constants for comproportionation of CPQ satisfy criteria established in the elaboration.