Naslov
The 14-22 mum Absorption Spectrum of Nitrous Acid Studied by High-Resolution Fourier-Transform Spectroscopy: New Analysis of the nu_5 and nu_6 Interacting Bands of trans-HONO and First Analysis of the nu_6 band of cis-HONO.

Autori
Perrin, Agnes ; Miljanić, Snežana ; Dehayem-Kamadjeu, Alix ; Chélin, Pascale ; Orphal, Johannes ; Demaison, Jean

Izvornik
Journal of Molecular Spectroscopy (0022-2852) 245 (2007), 2; 100-108

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
HONO; nitrous acid; cis-isomer; trans-isomer; high-resolution Fourier transform infrared spectrum; Coriolis resonance; line position; line intensity

Sažetak
High resolution Fourier transform absorption spectra of nitrous acid (HONO) have been recorded in the 400-700 cm_-1 spectral region. For the trans-HONO isomer a very extensive analysis of the nu_5 (ONO bend) and nu_6 (torsion) interacting fundamental bands of trans-HONO located near 595.620 and 543.879 cm_-1, respectively, was performed starting from the results of a previous study [C.M. Deeley, I.M. Mills, L.O. Halonen, J. Kauppinen, Can. J. Phys. 63 (1985) 962-965]. In addition, for the less abundant cis-HONO isomer, the first high resolution study of the nu_6 band located at 639.7432 cm_-1 was achieved, while the nu_5 band is presumed to be located near 609.2 cm_-1. For both isomers the strong A-type and B-type Coriolis interactions linking the {; ; ; ; ; ; ; ; 5^1, 6^1}; ; ; ; ; ; ; ; interacting energy levels were accounted for during the energy level calculations. Finally, using these results a list of positions and of realistic relative line intensities has been generated for both isomers, and a comparison with ab initio predictions was performed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA