New insights into the solvent effect on the electrooxidation kinetics of nickelocene

摘要

The kinetics of the one-electron oxidation of nickelocene are studied by ac-voltammetry in different aprotic solvents at mercury and platinum ultramicroelectrodes. A double layer correction has been applied to the reported electron transfer rate constants. The influence of solvent on the activation enthalpy is also examined. Solvent effects on the electron transfer rate constants and activation enthalpies are interpreted within the context of the encounter-pre-equilibrium model. Several different methods are used to analyse the solvent effect on the kinetics of nickelocene oxidation. The parameters of the charge transfer process (the equilibrium constant For the precursor complex formation) are obtained on the basis of these analyses. [References: 30]