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Open AccessArticle

Computational and Spectroscopic Studies of Carbon Disulfide

1
Research Center for Chemistry, Indonesian Institute of Sciences, Kawasan Puspiptek Serpong, Tangerang Selatan, Banten 15314, Indonesia
2
Research Center for Physics, Indonesian Institute of Sciences, Kawasan Puspiptek Serpong, Tangerang Selatan, Banten 15314, Indonesia
3
ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, UK
*
Author to whom correspondence should be addressed.
Academic Editors: Paulo Ribeiro-Claro and Mariela Nolasco
Molecules 2020, 25(8), 1901; https://doi.org/10.3390/molecules25081901
Received: 28 March 2020 / Revised: 14 April 2020 / Accepted: 15 April 2020 / Published: 20 April 2020
(This article belongs to the Special Issue Computational Spectroscopy 2020)
The vibrational spectroscopy of CS2 has been investigated many times in all three phases. However, there is still some ambiguity about the location of two of the modes in the solid state. The aim of this work was to locate all of the modes by inelastic neutron scattering (INS) spectroscopy, (which has no selection rules), and to use periodic density functional theory to provide a complete and unambiguous assignment of all the modes in the solid state. A comparison of the observed and calculated INS spectra shows generally good agreement. All four of the ν2 bending mode components are calculated to fall within 14 cm−1. Inspection of the spectrum shows that there are no bands close to the intense feature at 390 cm−1 (assigned to ν2); this very strongly indicates that the Au mode is within the envelope of the 390 cm−1 band. Based on a simulation of the band shape of the 390 cm−1 feature, the most likely position of the optically forbidden component of the ν2 bending mode is 393 ± 2 cm−1. The calculations show that the optically inactive Au translational mode is strongly dispersed, so it does not result in a single feature in the INS spectrum. View Full-Text
Keywords: carbon disulfide; inelastic neutron scattering; Raman spectroscopy; infrared spectroscopy; density functional theory carbon disulfide; inelastic neutron scattering; Raman spectroscopy; infrared spectroscopy; density functional theory
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Adilina, I.B.; Aulia, F.; Fitriady, M.A.; Oemry, F.; Widjaya, R.R.; Parker, S.F. Computational and Spectroscopic Studies of Carbon Disulfide. Molecules 2020, 25, 1901.

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