Abstract
The oxidation potentials of anilin, diphenylamine, p-phenylenediamine, and N-phenyl-p-phenyleenedia-mine derivatives were measured by using polarography under the same condition, and the highest occupied energy levels of these chemicals were caluculated by means of simple L.C.A.O-M.O. method.
The oxidation potentials were found to relate linearly to the levels, and the following equation was obtained;
Vo=2.3λ-0.95
where Vo was the potentials (volt).
Now, the energy from the lowest vacant level to the highest occupied level of these chemicals related linearly to the frequencies calculated from ultraviolet absorption. From the results, the reasonance integral β was found to be about 52kcal/mol, when α+2β was adopted as a coulomb integral of nitrogen.
From these results, the reaction energy for the reaction between the amine derivatives and ozone was assumed to be lower than 6kcal/mol.
