Electrode Reactors of Cobalt (III) Complexes

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electrode reactions, electrodes, cobalt, physics, chemistry, complexes


Chemistry | Physical Sciences and Mathematics | Physics


The purpose of these investigations is to elucidate the mechanisms of the electroreduction of Cobalt (III) complexes. It is known from polarographic investigations that, in general, Cobalt (III) complexes undergo l-electron reductions at the dropping mercury electrode, followed by two-electron reductions to the free metal. An exception to this is the tris(dipyridyl) cobalt (III) complex, in which the Cobalt (I) complex is apparently stable. The reductions of Cobalt (III) complexes are usually quite irreversible; however, complexes with ethylenediamine, dipyridyl, o-phenanthroline, glutamate, and vitamin B12a are reduced reversibly. In all cases where the reductions of ammine complexes of Cobalt (III) have been studied, the evidence indicates that the reduction occurs with retention of the ligand configuration3,4 implying that no chemical reaction prior to the electrode reaction is involved in the reduction.

Department 1 Awarding Honors Status


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