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First analysis of the rotationally-resolved ν2 and 2ν2- ν2 bands of sulfur dioxide, 33S16O2

Published

Author(s)

Thomas A. Blake, Jean-Marie Flaud, Walter J. Lafferty

Abstract

A Fourier transform spectrum of sulfur dioxide 33S16O2 has been recorded in the 18.3 µm spectral region at a resolution of 0.002 cm-1 using a Bruker IFS 125HR spectrometer leading to the observation of the ν2 and 2ν2- ν2 vibrational bands of the 33S16O2 molecule. The corresponding upper state ro-vibrational levels were fit using Watson-type Hamiltonians. In this way it was possible to reproduce the upper state ro-vibrational levels to within the experimental uncertainty; i.e., 0.20 x 10-3 cm-1. Very accurate rotational and centrifugal distortion constants were derived from the fit together with the following band centers: ν0 (ν2) =515.659089(50) cm-1, ν0 (2ν2) = 1030.697723(20) cm-1.
Citation
Journal of Molecular Spectroscopy
Volume
333

Keywords

band centers, greenhouse gas, infrared spectrum, rotational analysis, sulfur dioxide, Watson Hamiltonian

Citation

Blake, T. , Flaud, J. and Lafferty, W. (2017), First analysis of the rotationally-resolved ν2 and 2ν2- ν2 bands of sulfur dioxide, 33S16O2, Journal of Molecular Spectroscopy, [online], https://doi.org/10.1016/j.jms.2016.12.011 (Accessed April 17, 2024)
Created January 2, 2017, Updated October 12, 2021