Cation radicals of phenothiazines. Part 4. Electron transfer between aquamanganese(III) and N-alkylphenothiazines

Abstract

The kinetics of electron transfer between aquamanganese(III) and N-alkylphenothiazines, giving rise to the corresponding cation radicals, has been investigated in the range 0.20–1.50 mol dm^–3 HClO₄ at different temperatures. The main reaction path has been assigned to the unhydrolysed species Mn³⁺(aq), and there is a dependence of the rate constants on the corresponding reduction potentials.