Spectroscopy of the acetylenic C-H stretch of propyne-d3 in the region of the second overtone

Y. Ganot, X. Chen, I. Bar, S. Rosenwaks

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12 Scopus citations

Abstract

The rovibrational overtone spectrum of propyne-d3 (CD3-C□C-H) in the region of the second overtone of the acetylenic C-H stretch (3v1) 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, 3v1, overlapped by two hot bands identified as 3v1 + v10 - v10 and 3v1 + 2v10 - 2v10, where v10 is the degenerate C-C□C bend. The bands are resolved for the total angular momentum, allowing derivation of the parameters of the 3v1 state and of some of those of the hot bands.

Original languageEnglish
Pages (from-to)249-252
Number of pages4
JournalJournal of Molecular Spectroscopy
Volume208
Issue number2
DOIs
StatePublished - 1 Jan 2001

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