(Received February 29, 1956)
An attempt is made to include the effects of electron-electron interactions into the two-dimensional free-electron model of Platt for conjugated systems. The method is explained in the case of the naphthalene molecule as a simple example. The excitation energies of the first four singlets are calculated. The agreement between theory and experiment is moderate. The method may be applied to larger systems with reasonable amount of labor, to which the applications of the usual theories based on atomic orbitals may not be feasible.
URL : http://ptp.ipap.jp/link?PTP/15/495/
DOI : 10.1143/PTP.15.495