| DOI | Resolve DOI: https://doi.org/10.1021/acs.jpca.3c01664 |
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| Author | Search for: Gartner, Travis; Search for: Lauzin, ClémentORCID identifier: https://orcid.org/0000-0001-5044-5137; Search for: McKellar, A. R.W.1; Search for: Moazzen-Ahmadi, NasserORCID identifier: https://orcid.org/0000-0001-8307-3480 |
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| Affiliation | - National Research Council of Canada. Quantum and Nanotechnologies
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| Funder | Search for: Fédération Wallonie-Bruxelles; Search for: Fonds De La Recherche Scientifique - FNRS; Search for: Natural Sciences and Engineering Research Council of Canada |
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| Format | Text, Article |
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| Subject | energy levels; excited states; group theory; infrared light; tunneling |
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| Abstract | Spectra of water─CO₂ dimers are studied using a tunable mid-infrared source to probe a pulsed slit jet supersonic expansion. H₂O–CO₂ and D₂O–CO₂ are observed in the CO₂ ν₃ fundamental region (≈2350 cm⁻¹), D₂O–CO₂ is also observed in the D₂O ν₃ fundamental region (≈2790 cm⁻¹), and HDO–CO₂ is observed in the HDO O–D stretch fundamental region (≈2720 cm⁻¹), all for the first time in these regions. Analysis of the spectra yields excited state rotational parameters and vibrational shifts. They also yield the first experimental values of the ground state internal rotation tunneling splittings for D₂O–CO₂ (0.003 cm⁻¹) and HDO–CO₂ (0.0234 cm⁻¹). The latter value is a direct determination made possible by the reduced symmetry of HDO–CO₂. These results provide stringent and easily interpreted tests for theoretical water–CO₂ potential energy surface calculations. |
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| Publication date | 2023-04-17 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 3d1ae15e-6fac-4b61-a06a-353d3390972d |
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| Record created | 2024-06-19 |
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| Record modified | 2024-06-19 |
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