First high-resolution analysis of the ν26 band of the C2H2D2-cis isotopologue of ethylene

O. N. Ulenikov, O. V. Gromova, E. S. Bekhtereva, Yu V. Konova, C. Sydow, S. Bauerecker

Research output: Contribution to journalArticlepeer-review


The high–resolution infrared spectrum of C2H2D2-cis was recorded for the first time and analyzed in the region of 2400–2700 cm−1, where the ν26 band is located. 1987 transitions were assigned to the ν26 band and 623 ro–vibrational energies of the (v2=v6=1) vibrational state were determined from the assigned transitions. Parameters of the effective Hamiltonian were determined from the weighted fit, which takes into account the studied (v2=v6=1) vibrational state and six other closely located (but experimentally here not visible) vibrational states of C2H2D2-cis. The obtained “experimental” energy values were used as initial information in the fit. Determined from the fit, a set of 95 parameters reproduces 623 initial energy values of the (v2=v6=1) vibrational state, representing 1987 line positions of the ν26 band with the drms=3.98×10−3 cm−1.

Original languageEnglish
Pages (from-to)99-109
Number of pages11
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Publication statusPublished - 1 Aug 2019


  • High-resolution spectra of CHD-cis
  • Ro-vibrational resonance interactions
  • Spectroscopic parameters
  • ν+ν band of CHD-cis ethylene

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'First high-resolution analysis of the ν<sub>2</sub>+ν<sub>6</sub> band of the C<sub>2</sub>H<sub>2</sub>D<sub>2</sub>-cis isotopologue of ethylene'. Together they form a unique fingerprint.

Cite this