The electrode reaction of indium(III) in the presence of pentaammineiodo- and pentaammineisothiocyanatocbalt(III) complexes at the dropping mercury electrode

Abstract Polarographic reduction waves of In(III) in the presence of pentaammineiodo- or pentaammineisothiocyanatocobalt(III) complexes have been investigated. The catalytic effect on the electrode process of In(III) by iodide or thiocyanate ions which were liberated from the cobalt(II) complexes reduced simultaneously at the electrode was confirmed experimentally. A marked difference was found in the acceleration process between thiocyanate and iodide ions of these electrode reactions.