Cars spectra of van der waals complexes: The structure of the CO2 dimer

G. A. Pubanz, M. Maroncelli, J. W. Nibler

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Abstract

We report the first coherent Raman detection of small van der Waals aggregates formed in dilute CO2/He free-jet expansions. CARS spectra show distinct features attributable to dimers and higher-order polymers of CO2. Comparison of these Raman data with infrared spectra in the ν1 region of CO2 indicates that the rule of mutual exclusion is operative for the dimer vibrations. This result favors an offset parallel C2h structure for the most stable dimer configuration rather than a polar T-shaped arrangement proposed from recent electric deflection experiments.

Original languageEnglish (US)
Pages (from-to)313-317
Number of pages5
JournalChemical Physics Letters
Volume120
Issue number3
DOIs
StatePublished - Oct 11 1985

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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