On the improvement of the rotational structure analysis of13CH3D ground vibrational state

O. N. Ulenikov, E. S. Bekhtereva, M. R. Konova, Yu V. Krivchikova, V. M. Horneman

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2 Citations (Scopus)


The main goal of the present study was to improve the already published rotational structure analysis of the ground vibrational state of the13CH3Dmolecule. To realise that,we recorded high-resolution spectra of a set of the strongly interacting vibrational bands, 2ν3(A1), 2ν6(A1), 2ν6(E), ν2(A1), ν5+ ν6(A1), ν5+ ν6(A2), ν5+ ν6(E) and ν3+ ν6(E). From the analysis of the experimental data, more than 1900 ground state combination differences (GSCD) were determined with Jmax= 18, ΔJmax= 2 and Kmax= 15. The a1/a2splittings of the states with quantum number K = 3 were taken into account. The presence of numerous forbidden transitions allowed us to determine with high accuracy GSCD not only with ΔK = 0, but with ΔK = ± 1, ± 2 and ± 3, as well. Spectroscopic parameters of the ground vibrational state were determined from the joint fit of the obtained GSCD (they are reproduced with drms= 0.00014 cm-1). The 21 highly accurate THz-region transitions which were also used as input data, are reproduced with drms= 47 kHz.

Original languageEnglish
Pages (from-to)2228-2232
Number of pages5
JournalMolecular Physics
Issue number14-15
Publication statusPublished - 2013


  • Ground state rotational structure
  • Monodeuterated methane
  • Spectroscopic parameters

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Biophysics
  • Molecular Biology

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