Table of Contents
Laser Chemistry
Volume 19, Issue 1-4, Pages 191-194

The Resonance Raman Spectra Of Biologically Relevant Polyene Derivatives in T1: A Theoretical Investigation

Dipartimento di Chimica “G. Ciamician”, Università di Bologna, Via F. Selmi, 2, Bologna 40126, Italy

Received 21 April 1997

Copyright © 1999 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The vibrational structure of the T1 resonance Raman spectra of β-ionylidene acetaldehyde (C15 aldehyde) and retinal are analyzed with the help of semiempirical quantum chemical calculations. The T1 equilibrium structures and vibrational force fields, along with the structure in the Tn state which is in resonance with the exciting wavelength, are obtained and employed to model the spectra under the assumption of a dominant Franck–Condon mechanism.