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Torsional selection rules, Raman tensors, and cross sections for degenerate modes of C2H6

AuthorsFernández Sánchez, José María ; Montero, Salvador
KeywordsOrganic compounds
Librational states
Raman spectra
Spectral line intensity
Issue Date8-Feb-2003
PublisherAmerican Institute of Physics
CitationJ. Chem. Phys 118(6): 2657-2672 (2003)
AbstractWe analyze the peculiarities induced by the torsional motion on the Raman spectra of the degenerate vibrational bands of ethane. Selection rules for the Raman transitions between the torsionally split energy levels are derived first in terms of symmetry arguments. Then, their associated intensities are calculated with a model for the torsional dependence of the molecular polarizability. New experimental spectra of the Raman degenerate bands of C2H6, some recorded in jet expansions, are also included and analyzed to show the current state of the problem.
Description16 pages, 12 figures.-- PACS nrs.: 33.20.Tp, 33.15.Mt, 33.70.Fd.
Publisher version (URL)http://dx.doi.org/10.1063/1.1535420
Appears in Collections:(CFMAC-IEM) Artículos
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