Correlations between the electronic spectra of alternant hydrocarbon molecules and their mono- and di-valent ions

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Abstract
The relative polarizations of the absorption bands in the electronic spectra of the mono- and di-negative ions of biphenyl, terphenyl and quaterphenyl were determined by the same method as reported in a previous paper [1]. A qualitative discussion is given of the correlation between the electronic spectra of the molecule and ions of these polyphenyls. Both the spectra and semi-empirical m.o. calculations suggest that the polyphenyl ions possess very large electronic polarizabilities.