Collect. Czech. Chem. Commun. 1991, 56, 2067-2072

Electroreduction of a benzenediazonium salt in the presence of a radical acceptor

Pavel Janderka and Leoš Zábrš

Department of Theoretical and Physical Chemistry, Masaryk University, 611 37 Brno


Potentiostatic reduction of p-methoxybenzenediazoniumtetrafluoroborate was studied in acidic aqueous solutions and in dimethylformamide. The mean number of electrons transferred to a molecule of the depolarizer is influenced by the presence of a radical acceptor, acrylamide, and depends on its concentration. The course of electrolysis in the presence of acrylamide was investigated by measuring the relative viscosity of the electrolysed solution. A polymer was isolated from both aqueous and nonaqueous solutions, and its mean relative molecular mass was determined by viscosimetry in an aqueous solution.