Fourier Transform Spectroscopy of Carbonyl Sulfide from 4800 to 8000 cm−1and New Global Analysis of16O12C32S

✍ Scribed by E. Rbaihi; A. Belafhal; J. Vander Auwera; S. Naı̈m; A. Fayt

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 507 KB
• Volume: 191
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1998.7616

✦ Synopsis

We have measured the FT spectrum of natural OCS from 4800 to 8000 cm Ϫ1 with a near Doppler resolution and a line-position accuracy between 2 and 8 ϫ 10 Ϫ4 cm Ϫ1 . For the normal isotopic species 16 O 12 C 32 S, 37 vibrational transitions have been analyzed for both frequencies and intensities. We also report six bands of 16 O 12 C 34 S, five bands of 16 O 13 C 32 S, two bands of 16 O 12 C 33 S, and two bands of 18 O 12 C 32 S. 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 Ϫ1 , a new global rovibrational analysis of 16 O 12 C 32 S has been performed. We have determined a set of 148 molecular parameters, and a statistical agreement is obtained with all the available experimental data.