Electronic States of Organic Molecules

Abstract
The spectra of three simple dye‐like molecules, and of benzene and naphthalene, are treated in a semiquantitative fashion. The methods employed are the bond orbital, the molecular orbital (somewhat modified), the antisymmetrized molecular orbital, and two models, one related to the bond orbital, the other to the molecular orbital. The positions of main and second‐order bands, and intensities, are calculated. Extension of the calculations to complex cases is indicated.