Rotational spectroscopy of LiCCH ( X̃ 1Σ ) in its ground and v5 vibrational states

A. J. Apponi, M. A. Brewster, L. M. Ziurys

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12 Scopus citations


The pure rotational spectrum of LiCCH (X̃ 1Σ) in its ground and v5 vibrational states has been recorded using direct absorption, millimeter/sub-millimeter spectroscopy in the range of 105-538 GHz. For the main isotopomer, 21 transitions were measured for the ground state and 10 transitions each for the excited levels v5=1, 2, and 3, where ℓ-type doubling was resolved. Several transitions were also recorded for 6LiCCH, Li13CCH, LiC13CH, and LiCCD. All were observed in their natural abundances except for LiCCD. Rotational, ℓ-type doubling and vibration-rotation constants were determined for LiCCH, as well as rs and ro structures.

Original languageEnglish (US)
Pages (from-to)161-169
Number of pages9
JournalChemical Physics Letters
Issue number1-3
StatePublished - Dec 11 1998

ASJC Scopus subject areas

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


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