About 400 absolute intensities have been measured for six bands(5 Sigma-Sigma and 1 Pi-Sigma bands) of (OCS)-O-16-C-12-S-32 in the region of the nu(1) + nu(3) band near 3.4 mu m. The majority of these bands exhibit weak to very strong Herman-Wallis behavior as a result of various anharmonic and l-type resonances between the upper levels involved. The individual line intensities were treated in two different ways. First, they were fitted to usual effective formulae, leading to the band strengths and Herman-Wallis factors. Second, the line intensities in the five Sigma-Sigma bands were fitted to a model taking explicitly into account the various anharmonic and I-type resonances between the upper levels. This treatment showed that these resonances quantitatively explain to a large extent the Herman-Wallis behavior observed. (C) 1995 Academic Press, Inc.
Errera, Q., Vanderauwera, J., Belafhal, A., & Fayt, A. (1995). Absolute Intensities in (ocs)-o-16-c-12-s-32 - the 2500-3100-cm(-1) Region. Journal of Molecular Spectroscopy, 173(2), 347-369. https://doi.org/10.1006/jmsp.1995.1240 (Original work published 1995)