Spectroscopy of the Acetylenic CH Stretch of Propyne-d3 in the Region of the Second Overtone

The rovibrational overtone spectrum of propyne-d3 (CD3CCH) in the region of the second overtone of the acetylenic CH stretch (3ν1) was monitored employing photoacoustic laser absorption spectroscopy. Comparison of the observed spectrum with that simulated for a symmetric-top molecule revealed th...

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Bibliographic Details
Published in:Journal of molecular spectroscopy 2001-08, Vol.208 (2), p.249-252
Main Authors: Ganot, Y., Chen, X., Bar, I., Rosenwaks, S.
Format: Article
Language:English
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Summary:The rovibrational overtone spectrum of propyne-d3 (CD3CCH) in the region of the second overtone of the acetylenic CH stretch (3ν1) was monitored employing photoacoustic laser absorption spectroscopy. Comparison of the observed spectrum with that simulated for a symmetric-top molecule revealed the assignment. The observed spectrum comprises the main parallel band, 3ν1, overlapped by two hot bands identified as 3ν1+ν10−ν10 and 3ν1+2ν10−2ν10, where ν10 is the degenerate CCC bend. The bands are resolved for the total angular momentum, allowing derivation of the parameters of the 3ν1 state and of some of those of the hot bands.
ISSN:0022-2852
1096-083X
DOI:10.1006/jmsp.2001.8383