A versatile aid in spectrum assignment: discriminating between fundamental and non-fundamental vibrational bands in Raman spectra

For the assignment of vibrational spectra, the discrimination between fundamental and non-fundamental vibrations is a pertinent issue that frequently remains unresolved, in particular, for polymer vibrational spectra. In the present paper, we demonstrate that the Stokes/anti-Stokes Raman intensity r...

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Bibliographic Details
Published in:Vibrational spectroscopy 2000-04, Vol.23 (1), p.95-101
Main Authors: Meier, Robert J, van der Pol, André
Format: Article
Language:English
Subjects:
Ab(-)initio
Alkane
Anti-Stokes
Intensities
Polyethylene
Raman
Stokes
Vibrational spectroscopy
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Summary:For the assignment of vibrational spectra, the discrimination between fundamental and non-fundamental vibrations is a pertinent issue that frequently remains unresolved, in particular, for polymer vibrational spectra. In the present paper, we demonstrate that the Stokes/anti-Stokes Raman intensity ratio can be used in a generic method to classify modes into fundamental and non-fundamental groups. The approach is validated by data on tetrachloromethane, further demonstrations involve polyethylene and urea.
ISSN:0924-2031
1873-3697
DOI:10.1016/S0924-2031(00)00055-2