Intermolecular vibrational frequencies of the C-bonded CO₂CO dimer and observation of HeCO₂CO trimers

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DOIResolve DOI: http://doi.org/10.1016/j.cplett.2016.03.019
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TypeArticle
Journal titleChemical Physics Letters
ISSN00092614
Volume651
Pages6265
AbstractInfrared spectra of the CO₂─CO dimer are observed in the carbon monoxide CO stretch region (≈2150 cm⁻¹). Combination bands yield the first experimental determinations of intermolecular mode frequencies for the planar T-shaped C-bonded form (‘isomer 1’): 24.34 cm ⁻¹ for the in-plane CO rock and 43.96 cm ⁻¹ for the out-of-plane CO rock. These values are significantly higher than the analogous modes of the O-bonded form (‘isomer 2’), previously determined to be 14.19 and 22.68 cm ⁻¹, respectively. New results are also reported for both isomers of the¹²C¹⁸O₂-substituted form of the dimer. Weak ‘satellite bands’ observed for both isomers are tentatively assigned to the trimer He─CO₂─CO.
Publication date
PublisherElsiever
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
IdentifierS0009261416301282
NPARC number23000115
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Record identifierd9102373-5f86-4324-a8f3-055a1c679189
Record created2016-06-03
Record modified2016-06-03
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