Collect. Czech. Chem. Commun. 1988, 53, 903-911

Electron transfer between ferrocene and hexacyanoferrate(III) across the water/1,2-dichloroethane interface

Josef Hanzlíka, Jan Hovorkaa, Zdeněk Sameca and Štefan Tomab

a The J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 182 23 Prague 8
b Department of Organic Chemistry, Comenius University, 842 15 Bratislava


Kinetics of electron transfer between ferrocene or its derivative (1,1'-diethyl- or 1,1'-distearoylferrocene) in dichloroethane and hexacyanoferrate(III) in water was studied by means of convolution potential sweep voltammetry. Within the accessible range of experimental conditions no effect of either the potential or concentrations of reactants on the rate constant of electron transfer from the organic to the aqueous phase (ko→w = 1 . 10-7 m4 mol-1 s-1) was observed. Electron transfer was shown to occur far from the potential range, in which the ferricenium ion transfer can take place. However, the reaction was complicated by the chemical decomposition of ferricenium in dichloroethane (k = 0·346 s-1).