Vibrational spectra of push–pull polyenes show a peculiar feature namely, in infrared and Raman spectra strong, coincident bands appear, arising from vibrations localised on the polyene bridge. A simple model, based on the introduction of an effective internal field due to the charge transfer between end groups allows the infrared and Raman intensities of these bands to be related.

A relationship between Raman and infrared spectra: the case of push-pull molecules

DEL ZOPPO, MIRELLA ELVIRA ANGELA;TOMMASINI, MATTEO MARIA SAVERIO;CASTIGLIONI, CHIARA;ZERBI, GIUSEPPE
1998

Abstract

Vibrational spectra of push–pull polyenes show a peculiar feature namely, in infrared and Raman spectra strong, coincident bands appear, arising from vibrations localised on the polyene bridge. A simple model, based on the introduction of an effective internal field due to the charge transfer between end groups allows the infrared and Raman intensities of these bands to be related.
Raman spectroscopy; Infrared spectroscopy; push-pull polyenes
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/559349
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