Transferability of Potentials for Organic Molecules

Fewer than 300 Ea for organic molecules have been determined in the gas phase. The majority of the Ea have been determined by the ECD and/or TCT methods. The direct capture magnetron, AMB, photon, and collisional ionization methods have produced fewer than 40 values. Only the Ea of p-benzoquinone, nitrobenzene, nitromethane, azulene, tetracene, and perylene have been determined by three or more methods. Excited-state Ea have been obtained by each of these methods. Half-wave reduction potentials have determined the electron affinities of 50 aromatic hydrocarbons. The electron affinities of another 50 organic compounds have been determined from half-wave reduction potentials and the energies of charge transfer complexes. It is a manageable task to evaluate these 300 to 400 Ea. 

In particular, the concepts of potential control and the large driving force for chemical change available at electrodes generated two types of investigation. The first type concerned the realization that the first step in many electrode reactions is a simple, reversible one-electron (le ) transfer to/from the organic molecules and that stable intermediates -for example, anion radicals and cation radicals of aromatic compounds and transition... 

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