On the rotational analysis of the ground vibrational state of CH3D molecule

O. N. Ulenikov, G. A. Onopenko, N. E. Tyabæva, J. Schroderus, S. Alanko

Research output: Contribution to journalArticle

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Abstract

The rotational analysis in the ground vibrational state has been carried out for CH3D by using the ground state combination differences. More than 1500 allowed and 2500 forbidden transitions from the fundamental bands v3, v5, and V6 were used to determine 12 rotational parameters, which reproduce the observed combination differences within an accuracy of 1.0 × 10-4 cm-1. Altogether ten independent a1-a2 (K = 3) splittings with J > 10 in the vibrational ground state were observed and analyzed both with supercombination differences method [O. N. Ulenikov, S. Alanko, M. Koivusaari, and R. Anttila, Chem Phys. Lett. 268, 242-248 (1997)] and by generating energy levels from Hamilton!an. Problems in simultaneous determination of ∈̃ and h̄3 constants responsible for such splittings are discussed.

Original languageEnglish
Pages (from-to)249-259
Number of pages11
JournalJournal of Molecular Spectroscopy
Volume193
Issue number2
Publication statusPublished - 1999

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vibrational states
Ground state
Molecules
ground state
forbidden transitions
Electron energy levels
molecules
energy levels

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Ulenikov, O. N., Onopenko, G. A., Tyabæva, N. E., Schroderus, J., & Alanko, S. (1999). On the rotational analysis of the ground vibrational state of CH3D molecule. Journal of Molecular Spectroscopy, 193(2), 249-259.

On the rotational analysis of the ground vibrational state of CH3D molecule. / Ulenikov, O. N.; Onopenko, G. A.; Tyabæva, N. E.; Schroderus, J.; Alanko, S.

In: Journal of Molecular Spectroscopy, Vol. 193, No. 2, 1999, p. 249-259.

Research output: Contribution to journalArticle

Ulenikov, ON, Onopenko, GA, Tyabæva, NE, Schroderus, J & Alanko, S 1999, 'On the rotational analysis of the ground vibrational state of CH3D molecule', Journal of Molecular Spectroscopy, vol. 193, no. 2, pp. 249-259.
Ulenikov, O. N. ; Onopenko, G. A. ; Tyabæva, N. E. ; Schroderus, J. ; Alanko, S. / On the rotational analysis of the ground vibrational state of CH3D molecule. In: Journal of Molecular Spectroscopy. 1999 ; Vol. 193, No. 2. pp. 249-259.
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