Inorganica Chimica Acta
The electrochemical behavior of the unusual cobalt(II) diphenylazodioxide complex salts [Co(az)4](PF6)2 1 and [Co(bpy)(az)2](PF6)2 2 has been studied by cyclic voltammetry. Each complex displays two quasireversible redox couples, which are proposed to correspond to a reduction of Co(II) to Co(I), followed by a ligand-based reduction. Irreversible reductions of 1 are observed at more negative potentials, and are proposed to arise from deposition of elemental Co and the decomposition of transiently formed Co(-I) species. Spectroelectrochemical experiments on both 1 and 2, involving electrolytic reduction followed by reoxidation, are consistent with the quasireversibility observed in the CV measurements.
Balarama, Lakshmi; Emhoff, Kylin A.; Salem, Ahmed M.H.; Hanna, Jovana; Alsabony, Mohamed N.; Bayachou, Mekki; Mundell, Jerry; and Boyd, W. Christropher, "Electrochemical Studies of Cobalt(II) diphenylazodioxide Complexes" (2020). Chemistry Faculty Publications. 530.
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