Millimeter-wave spectra of the CO dimer : three new states and further evidence of distinct isomers

Download
  1. Get@NRC: Millimeter-wave spectra of the CO dimer : three new states and further evidence of distinct isomers (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1006/jmsp.2002.8579
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleJournal of Molecular Spectroscopy
Volume214
Issue1
Pages8793; # of pages: 7
AbstractThe millimeter-wave spectrum of the normal isotope of the CO dimer, (12C16O)2, has been systematically surveyed in the regions 75-105 and 131-174 GHz, with additional measurements covering the entire 60-176 GHz range. By combining these results and using the technique of combination differences based on previously known energy levels, 14 new rotational levels have been assigned and precisely ([approximate]0.1 MHz) located. They belong to 3 completely new states, 1 with A+ symmetry and 2 with A- symmetry. The position of the lowest energy A- state results in a new and lower value for the effective tunneling splitting of the CO dimer, 3.73 cm-1. The observation of dramatically different intensities for different bands supports the concept of two isomeric forms for (CO)2, the ground state having a larger intermolecular separation ([approximate]4.4 ?) with most likely a C-bonded configuration, and the low-lying (0.88 cm-1) excited state having a smaller separation ([approximate]4.0 ?) and an O-bonded geometry.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12338419
Export citationExport as RIS
Report a correctionReport a correction
Record identifier13d57354-420a-4853-aba2-8cf3c36bc1a1
Record created2009-09-10
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)