| Alternative title | Intermolecular vibrational states far above the van der Waals minimum: combination bands of the polar N2O dimer |
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| DOI | Resolve DOI: https://doi.org/10.1016/j.jms.2021.111428 |
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| Author | Search for: Mckellar, A.R.W.1; Search for: Moazzen-Ahmadi |
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| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | nitrous oxide; spectrum; dimer; van der Waals; infrared; supersonic jet; intermolecular vibration |
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| Abstract | Infrared combination bands of the polar isomer of the N₂O dimer are observed for the first time, using a tunable infrared laser source to probe a pulsed slit-jet supersonic expansion in the N₂O ν₁ region (≈2240 cm⁻¹). One band involves the torsional (out-of-plane) intermolecular mode and yields a torsional frequency of 19.83 cm⁻¹ if associated with the out-of-phase fundamental (N₂O ν₁) vibration of the N₂O monomers in the dimer. The other band, which is highly perturbed, yields an intermolecular in-plane geared bend frequency of 22.74 cm⁻¹. The results are compared with high level ab initio calculations. The less likely alternate assignment to the in-phase fundamental would give torsional and geared bend frequencies of 17.25 and 20.16 cm⁻¹, respectively. |
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| Publication date | 2021-02-06 |
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| Publisher | Elsevier |
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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 | 28c066d8-3529-456e-9f9a-982bad7931a1 |
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| Record created | 2021-06-29 |
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| Record modified | 2021-06-30 |
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