“Anomalous” Raman Polarization as Observed in Anthracene Anion

Abstract
An example of “anomalous” Raman polarization is presented by measuring the polarization dispersion of a resonant depolarized line of anthracene anion near the first absorption band. The molecular origin of the asymmetric Raman tensor is discussed on the basis of a vibronic effect associated with the resonant electronic level.