Cyclic voltammetric analysis of pH-dependent complex formation equilibria in anion coordination chemistry.
A procedure to analyze pH-dependent complex formation equilibria from cyclic voltammetry is described. Application to adduct formation equilibria between [Fe(CN)(6)](4-) and [Fe(CN)(6)](3-) with different polyammonium receptors is discussed. Extension to the interaction of substrates such as ATP, NAD(+), NADP(+), and carboxylate ions with these receptors by means of competitive interaction with hexacyanoferrate(II) ion is presented.
Doménech
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Department of Inorganic Chemistry, University of Valencia, c/Dr. Moliner 50, 46100 Burjassot, Valencia, Spain.
García-España
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Ramírez
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JA