Communication: Spectroscopic observation of the O-bonded T-shaped isomer of the CO-CO₂ dimer and two of its intermolecular frequencies

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DOIResolve DOI: http://doi.org/10.1063/1.4932043
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TypeArticle
Journal titleJournal of Chemical Physics
ISSN0021-9606
Volume143
Issue12
Article number121101
SubjectCarbon; Carbon monoxide; Center of mass; Combination bands; Fundamental bands; Infrared spectrum; Intermolecular distance; Intermolecular vibrational modes; Out-of plane; Shaped structures; Isomers
AbstractInfrared spectra in the carbon monoxide CO stretch region (≈2150 cm-1) are assigned to the previously unobserved O-bonded form of the CO<inf>2</inf>-CO dimer ("isomer 2"), which has a planar T-shaped structure like that of the previously observed C-bonded form ("isomer 1"), but with the CO rotated by 180°. The effective center of mass intermolecular distances are 3.58 Å for isomer 2 as compared to 3.91 Å for isomer 1. In addition to the fundamental band, two combination bands are observed for isomer 2, yielding values for two intermolecular vibrational modes: 14.19 cm-1 for the in-plane CO bend and 22.68 cm-1 for the out-of-plane bend.
Publication date
PublisherAIP Publishing
LanguageEnglish
AffiliationNational Research Council Canada; Security and Disruptive Technologies
Peer reviewedYes
NPARC number21276962
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Record identifier54b393d9-e9cd-469e-8853-08aed161144d
Record created2015-11-10
Record modified2017-03-23
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