DOI | Trouver le DOI : https://doi.org/10.1063/1.4739465 |
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Auteur | Rechercher : Afshari, M.; Rechercher : Dehghany, M.; Rechercher : McKellar, A. R. W1; Rechercher : Moazzen-Ahmadi, N. |
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Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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Format | Texte, Article |
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Résumé | Spectra of the nonpolar carbonyl sulfide dimer in the region of the OCS ν1 fundamental band were observed in a slit-jet supersonic expansion. The jet was probed using radiation from a tunable diode laser employed in a rapid-scan signal averaging mode. Six new bands were observed and analyzed, all of which originate from the dimer ground vibrational state. Three were vibrational fundamentals involving the (18OCS)2 and 16OCS-18OCS isotopologues. They enabled an estimate to be made of the frequency of the infrared-forbidden mode corresponding to in-phase vibration of the OCS monomers in the dimer, a value needed to obtain an intermolecular vibrational frequency from one of the observed combination bands. A relatively weak b-type dimer band centered at 2103.105 cm−¹ was assigned to the OCS 4ν2 (l = 0) bending overtone. Combination bands were observed involving the geared bend and van der Waals stretch intermolecular modes. The resulting experimental frequencies of 37.5(20) cm−¹ for the bend and 42.9727(1) cm−¹ for the stretch are in good agreement with a recent high level theoretical calculation. |
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Date de publication | 2012-08-01 |
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Dans | |
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Langue | anglais |
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Publications évaluées par des pairs | Oui |
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Numéro NPARC | 21269056 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 39ae02ae-306b-4927-98da-5df8ef40eeed |
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Enregistrement créé | 2013-12-03 |
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Enregistrement modifié | 2020-04-21 |
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