First study of the ro-vibrational structure of the g-symmetry vibrational states of C2D4 from the analysis of hot bands: The ν710−ν10 and ν1012−ν10 bands

O. N. Ulenikov, O. V. Gromova, E. S. Bekhtereva, A. L. Fomchenko, C. Sydow, C. Maul, S. Bauerecker

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The two strongest absorption “hot” bands of C2D4, ν710−ν10 and ν1012−ν10 were analyzed for the first time on the basis of high resolution infrared spectra recorded with a Bruker high resolution Fourier transform spectrometer. About 740 and 550 transitions (233 and 174 upper state ro-vibrational energy values) with Jmax.=25, Ka max=18 and Jmax.=20, Ka max.=10 for the bands ν710−ν10 and ν1012−ν10 were assigned. The obtained upper ro-vibrational energies were used then in the weighted fit of parameters of the effective Hamiltonian which takes into account resonance interactions between the vibrational states (v7=v10=1) and (v10=v12=1), on the one hand, and eight other closely located vibrational states, on the other hand. A set of 46 varied parameters was obtained from the fit, which reproduces the initial experimental data with the rms deviation of 2.5×10−4cm−1 and which is close to experimental uncertainties.

Original languageEnglish
Pages (from-to)178-189
Number of pages12
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume187
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • C2D4
  • High-resolution spectra
  • Hot band
  • Spectroscopic parameters

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

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