On the high resolution spectroscopy and intramolecular potential function of SO2

O. N. Ulenikov, E. S. Bekhtereva, S. Alanko, V. M. Horneman, O. V. Gromova, C. Leroy

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


Two weak stretching bands, ν1 + 3ν3 and 3ν1 + ν3, of the sulfur dioxide molecule have been recorded at high resolution and analyzed for the first time with using a Fourier transform Bruker IFS-120 HR interferometer. About 1000 transitions with Jmax. = 51, Ka max . = 16, and 900 transitions with Jmax. = 53, Ka max . = 16 have been assigned to the bands ν1 + 3ν3 and 3ν1 + ν3, respectively. Analysis of the recorded spectra was made using the model of isolated vibrational states. Parameters obtained from the fit reproduce the initial experimental ro-vibrational energies with the rms deviation of 0.0006 and 0.0012 cm-1 for the bands, 3ν1 + ν3 and ν1 + 3ν3, respectively. The problem of determination of the intramolecular potential function of SO2 is discussed.

Original languageEnglish
Pages (from-to)137-156
Number of pages20
JournalJournal of Molecular Spectroscopy
Issue number2
Publication statusPublished - Oct 2009


  • High-resolution spectra
  • Potential function
  • Spectroscopic parameters
  • Sulfur dioxide

ASJC Scopus subject areas

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

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