Ground states of conjugated molecules. XV. Bond localization and resonance energies in compounds containing nitrogen or oxygen

The heats of formation of, and bond lengths in, a number of classical conjugated molecules containing nitrogen or oxygen have been calculated by the method of part XII of this series. The results imply that the bonds in compounds of this type can be regarded as localized. Using the bond energies deduced in this way, resonance energies are calculated for a number of aromatic, and potentially aromatic, compounds containing nitrogen or oxygen.