Abstract
The effects of a wide range of bases on the oxidation potentials of hydroxamic acids and 4-fluorophenol were examined by cyclic voltammetry mainly in acetonitrile and methylene chloride at a glassy-carbon electrode. Linear relationships between ΔEp and the pKa of the added bases were obtained for pyridines and for aliphatic amines, where ΔEp=Epl-Epe ; Epl is the potential for the original first wave and Epe is that for the extra wave developed in the presence of the base. The results can be largely explained in terms of the formation of hydrogen-bonded complexes between the acids and the bases.
