Abstract
AbstractMicroelectrodes can be used to measure redox half‐wave potentials in aprotic solvents containing no purposely added supporting electrolyte. By employing an electrode of sufficiently small size, the accessible potential range in solution is considerably extended. The electrochemical oxidation of vinyl (enol) triflates, which are oxidized at high electrode potentials, can therefore be studied using an ultramicroelectrode. Oxidation and ionization potentials, determined by ultramicroelectrode voltammetry and He I photoelectron spectroscopy, respectively, of 2‐methylprop‐1‐enyl, cyclohexenyl, cyclopentenyl, 1,1‐diphenylethenyl and prop‐2‐enyl triflate are reported. The results from electrochemical measurements and photoelectron spectra were compared.
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