Abstract
Dynamic effect of the solvent is studied for the first time ever for the process that occurs in the vicinity of the activationless region, namely, the reaction of electroreduction of an ensemble of platinum(II) aquachloride complexes on a negatively charged mercury electrode. A sequential analysis of the sucrose influence on the interface structure and the equilibrium solvation energy is performed. Estimates of the above effects are given. These are necessary for subtracting the dependence of the electron transfer rate on the solvent relaxation time from the observed overall dependence on the concentration of the viscosity-forming additive. A procedure for estimating the sucrose concentration in the reaction layer is suggested and on this basis the increase in the local viscosity near the interface, which is caused by the presence of a surface excess of sucrose, is approximately taken into account. The potential interval where the reaction under study occurs in an almost adiabatic mode is determined.
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Pobelov, I.V., Kuz'minova, Z.V., Tsirlina, G.A. et al. Reduction of an Ensemble of Platinum(II) Aquachloride Complexes: Dynamic Effect of the Solvent. Russian Journal of Electrochemistry 39, 828–838 (2003). https://doi.org/10.1023/A:1025199921154
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DOI: https://doi.org/10.1023/A:1025199921154