Infrared spectrum of the CH3OH - CO complex in the C-O stretching region

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DOIResolve DOI: http://doi.org/10.1139/p00-080
AuthorSearch for: ; Search for:
TypeArticle
Journal titleCanadian Journal of Physics
Volume79
Issue2-3
Pages461466; # of pages: 6
AbstractThe infrared spectrum of the weakly-bound molecular complex methanol - carbon monoxide has been observed, for the first time in the gas phase, by means of a parallel (Δ K = 0) band in the region of the carbon monoxide C–O stretching vibration. The band origin, 2154.5 cm–1, represents a blue shift of 11.2 cm–1 relative to the free CO molecule; its proximity to that of the H2O – CO complex points to a similarity of the hydrogen bonding in the two systems. The observed structure of the band could be well reproduced by a simulation based on the methyl internal rotation component of A-symmetry. A component of E-symmetry must also be present, with roughly equal intensity, but the two components were not individually resolved. The observed transitions showed evidence of predissociation broadening, leading to an estimate of t 0.5 ns for the lifetime of the upper (C–O stretching) state.PACS Nos.: 3320E, 3425, 3520P, 3640
Publication date
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12328530
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Record identifier971d52e8-7431-4418-9b01-c031e421d36f
Record created2009-09-10
Record modified2016-05-09
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