Modeling of Two Step Diffusional ECirrECrev Mechanism in Square-Wave Voltammetry

The two-step successive electrochemical diffusional mechanism, coupled with an irreversible chemical step related to the product of first electron transfer, and reversible chemical step associated to the product of second electron transfer step (ECirrECrev mechanism), is considered for the first time under conditions of square-wave voltammetry. The voltammetric patterns depend on the elctron tramsfer coefficient of both electron transfer steps, on kinetics of electron transfer of both electron transfer steps. In addition, the kinetics of chemical affects the features of both SWV peaks, while the chemical kinetics and thermodynamics of second step affects the features of the second peak only. While the entire simulation protocol to calculate voltammograms of this complex mechanism is given in MATHCAD, hints are given on how to estimate the kinetic and thermodynamic parameters related to both chemical steps involved in this complex electrochemical mechanism. Ox + 1e- = B + C --> D + 1e- = F + Y =