Correspondences of the vibrational frequencies of the ground and electronic excited states of quinoxaline as revealed by the Raman intensities

Nobuhiro Ohta*, Mitsuo Ito

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The intensities of the Raman lines of quinoxaline were measured at different excitation wavelengths. The matrix element ratios of the vibronic couplings between the two lowest electronic excited states of the molecule were evaluated from the Raman intensities of the b1 vibrations, and they were compared with the matrix element ratios obtained from the vibrational frequencies of the ground and electronic excited states of the molecule. It was suggested that the ground state frequency of the b1 vibration at 867 cm-1 decreases greatly to 425 cm-1 in the lowest nπ* excited state.

Original languageEnglish
Pages (from-to)396-406
Number of pages11
JournalJournal of Molecular Spectroscopy
Volume59
Issue number3
DOIs
StatePublished - 15 Mar 1976

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