High-resolution IR spectrum of AsH2D: Ro-vibrational analysis of the bending triad bands ν3, ν4, and ν6

O. N. Ulenikov, E. S. Bekhtereva, O. V. Gromova, T. D. Chudinova, W. Jerzembeck, H. Bürger

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5 Citations (Scopus)


The infrared spectrum of the AsH2D molecule has been measured in the region of the three bending fundamental bands on a Fourier transform spectrometer with a resolution of 0.0024 cm-1 and analyzed for the first time. More than 7500 normally allowed and in addition about 600 forbidden, but perturbation-activated transitions with Jmax = 21, Kamax = 20 and Kcmax = 21 have been assigned to the bands ν3, ν4, and ν6. The measured transition wavenumbers were used to determine 1047 upper energy values. These energies were fitted with a Watson-type Hamiltonian in A reduction and IIIl representation taking into account resonance interactions between all three bending states, (001000), (000100), and (000001) and led to a physically meaningful set of 25 diagonal and 52 resonance spectroscopic parameters. These reproduce the experimental energies with an rms deviation of 0.00021 cm-1, which is close to the experimental uncertainty.

Original languageEnglish
Pages (from-to)114-122
Number of pages9
JournalJournal of Molecular Spectroscopy
Issue number1-2
Publication statusPublished - 1 Sep 2008


  • Fundamental bands of AsHD
  • Infrared spectrum
  • Isotopic species of AsH
  • Spectroscopic parameters

ASJC Scopus subject areas

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

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