Abstract
The high-resolution (0.0030 cm-1) Fourier transform infrared spectrum of CH279BrF has been studied in part of the atmospheric window between 910 and 980 cm-1, the region of the ν9 (935.847 cm-1) and ν5 + ν6 (961.239 cm-1) bands. The ν9 fundamental consists of a pseudo a-type band induced by Coriolis coupling with ν5 + ν6, in turn exhibiting a predominant a-type structure. Several interactions connecting these levels and the dark state 3ν6 have been assessed. The whole data set is treated using Watson's A-reduced Hamiltonian in the Ir representation implemented with first order a- and b- and c-type Coriolis terms. A detailed analysis of the rotational structure yields a set of accurate upper-state parameters up to quartic distortion terms for ν9 and ν5 + ν6. In addition, spectroscopic information about the dark ternary overtone of ν6 has been obtained.
| Original language | English |
|---|---|
| Journal | Journal of Molecular Spectroscopy |
| Volume | 269 |
| Issue number | 2 |
| Pages (from-to) | 226-230 |
| Number of pages | 5 |
| ISSN | 0022-2852 |
| DOIs | |
| Publication status | Published - Oct 2011 |