Assignment of rovibrational transitions of propyne in the region of 2934-2952 cm-1 measured by two-color IR-vacuum ultraviolet laser photoion-photoelectron methods

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Xi Xing
  • Beth Reed
  • Sun-Jong Baek
  • Mi-Kyung Bahng
  • C. Y. Ng

Detail(s)

Original languageEnglish
Article number044313
Journal / PublicationJournal of Chemical Physics
Volume127
Issue number4
Publication statusPublished - 2007
Externally publishedYes

Abstract

The infrared (IR) spectrum of propyne in the region of 2934-2952 cm-1 has been recorded by the IR-vacuum ultraviolet (VUV)-photoion method. The spectrum is shown to consist of two near-resonant, but noncoupled vibrational bands: the v2 symmetric methyl C-H stretching vibrational band and a combination vibrational band vcs. The previously unobserved Q line of the vcs band is observed. The rotational transition lines of the v2=1 band produces IR-VUV-pulsed field ionization-photoelectron (IR-VUV-PFI-PE) signal at the C3H4+ (v2+=1) photoionization threshold. The rotational transition lines associated with the vcs band do not produce IR-VUV-PFI-PE signal. Rotational transition lines of both vibrational bands are assigned and simulated; and ab initio calculations further confirm the assignment. © 2007 American Institute of Physics.

Citation Format(s)

Assignment of rovibrational transitions of propyne in the region of 2934-2952 cm-1 measured by two-color IR-vacuum ultraviolet laser photoion-photoelectron methods. / Xing, Xi; Reed, Beth; Lau, Kai-Chung et al.
In: Journal of Chemical Physics, Vol. 127, No. 4, 044313, 2007.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review