STRUCTURE AND ENERGY-SPECTRA OF MOLECULES CONTAINING ANTIAROMATIC RING-SYSTEMS .4. AROMATICITY AND ANTI-AROMATICITY IN ELECTRONIC GROUND AND EXCITED-STATES
F. Dietz et al., STRUCTURE AND ENERGY-SPECTRA OF MOLECULES CONTAINING ANTIAROMATIC RING-SYSTEMS .4. AROMATICITY AND ANTI-AROMATICITY IN ELECTRONIC GROUND AND EXCITED-STATES, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 52(9), 1997, pp. 1072-1076
Using various criteria to characterize the terms aromaticity and anti-
aromaticity it is shown that the non-benzoid aromatic azulene and the
benzoid aromatic naphthalene should have anti-aromatic properties in t
he first excited singlet state.