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Fourier transform spectroscopy of carbonyl sulfide from 4800 to 8000 cm–1 and new global analysis of 16O12C32S

par Rbaihi, E.;Belafhal, Abdelmajid;Vander Auwera, Jean ;Naïm, S.;Fayt, André
Référence Journal of Molecular Spectroscopy, 191, 1, page (32-44)
Publication Publié, 1998

Article révisé par les pairs

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Résumé :

We have measured the FT spectrum of natural OCS from 4800 to 8000 cm-1 with a near Doppler resolution and a line-position accuracy between 2 and 8 × 10-4 cm-1. For the normal isotopic species 16O12C32S, 37 vibrational transitions have been analyzed for both frequencies and intensities. We also report six bands of 16O13C34S, five bands of 16O13C32S, two bands of 16O12C33S, and two bands of 18O12C32S. Important effective Herman-Wallis terms are explained by the anharmonic resonances between closely spaced states. As those results complete the study of the Fourier transform spectra of natural carbonyl sulfide from 1800 to 8000 cm-1, a new global rovibrational analysis of 16O12C32S has been performed. We have determined a set of 148 molecular parameters, and a statistical agreement is obtained with all the available experimental data. © 1998 Academic Press.