The high-resolution (0.001 cm(-1)) spectrum of thiirane has been recorded at the far-infrared beamline at the Australian synchrotron between 760-400 cm(-1) and 170-10 cm(-1). Ro-vibrational transitions of the highly Coriolis coupled nu(5) (628.1 cm(-1)) and nu(15) (669.7 cm(-1)) fundamentals, as well as pure rotational far-IR transitions have been assigned, and rotational, centrifugal distortion, and Coriolis interaction parameters determined. nu(15) gains the vast majority of its intensity from an interesting Coriolis intensity stealing mechanism, which is also outlined.
Bane, M. K., Thompson, C. D., Appadoo, D. R. T., & McNaughton, D. (2012). Synchrotron far infrared spectroscopy of the ground, nu(5), and nu(15) states of thiirane. Journal of Chemical Physics, 137(8), 1 - 6. https://doi.org/10.1063/1.4747191