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Resolved Torsional Splitting in the nu18 and nu19 Bands of Propene



Walter J. Lafferty, J.- M. Flaud, M Herman


FT-jet spectra of propene were recorded at 0.005 cm-1 instrumental resolution around 950 cm-1. Thanks to the jet conditions, probably corresponding to Trot close to 80 K, the torsion degrees of freedom are efficiently cooled down and the fine structure of the *18 and *19 vibrational bands could be investigated. The bands are perturbed and approximate variations of the principal rotational constants are obtained, as well as band origins. The A/E torsional splitting appears totally unpredictable over the range of vibrational-torsional energy investigated.
Journal of Molecular Structure


fourier-transform-jet spectrum, high resolution IR spectrum, molecular beam, propene, torsional splitting


Lafferty, W. , M., J. and Herman, M. (2006), Resolved Torsional Splitting in the nu<sub>18</sub> and nu<sub>19</sub> Bands of Propene, Journal of Molecular Structure (Accessed July 19, 2024)


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Created May 8, 2006, Updated February 17, 2017