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1.4 CHEMICAL SCIENCES
Cyclic voltammetry of ferrocene dicarboxylate in aqueous solutions at high pH, in the presence of oxygen, showed evidence of an EC' mechanism where the oxidised form of ferrocene dicarboxylate reacts with H02- , which had been produced at a lower potential. However, an analogous experiment with ferrocene carboxylate yielded a cyclic voltammogram with a post peak: following the anodic peak: for ferrocene carboxylate. The reason for the post peak: is not clear but may be due to a delay in the reaction between the oxidised form of ferrocene carboxylate and H02-.
Cassidy, J.F., O'Gorman, J., Ronane, M., Howard, E.:Note on the Voltammetry of Ferrocene Carboxylate in Aqueous Solution. Electrochemistry Communications, Vol.1, 2, 1999, pp.69-71. doi:10.1016/S1388-2481(99)00007-7