The resonance energies of polyacenes were determined on the basis of the additive principle of π-bond energies in nonaromatic compounds. The additive components in the total π-energies for these compounds were reasonably estimated from the infinitely large polyacene. The calculated resonance energies appear to be much improved as compared with those calculated by Hess and Schaad.
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Jun‐ichi Aihara (1975) studied this question.
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