Voltammetry of tetra-alkyl ammonium salts at platinum in sulphur dioxide solution: Oxidation of the halides

The polarographic or voltammetric behaviour of a selected group of tetra-alkyl ammonium halides and related compounds in liquid sulphur dioxide was investigated, using a stationary disk platinum indicating micro-electrode and a silver/silver-bromide reference electrode with compensation for the IRdrop of the solution. The electrochemical oxidation-reduction patterns are characteristic of the natures of the cation and anion composing the compound.