| Autre titre | Infrared bands of CS2 dimer and trimer at 4.5 μm |
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| DOI | Trouver le DOI : https://doi.org/10.1063/1.5091508 |
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| Auteur | Rechercher : Barclay, A. J.; Rechercher : Esteki, K.; Rechercher : Michaelian, K. H.; Rechercher : Mckellar, A. R. W.1Identifiant ORCID : https://orcid.org/0000-0001-5409-2690; Rechercher : Moazzen-ahmadi, N.Identifiant ORCID : https://orcid.org/0000-0001-8307-3480 |
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| Affiliation | - Conseil national de recherches Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Résumé | We report observation of new infrared bands of (CS₂)₂ and (CS₂)₃ in the region of the CS₂ ν1 + ν₃ combination band (at 4.5 µm) using a quantum cascade laser. The complexes are formed in a pulsed supersonic slit-jet expansion of a gas mixture of carbon disulfide in helium. We have previously shown that the most stable isomer of (CS₂)₂ is a cross-shaped structure with D₂d symmetry and that for (CS₂)₃ is a barrel-shaped structure with D₃ symmetry. The dimer has one doubly degenerate infrared-active band in the ν₁ + ν₃ region of the CS₂ monomer. This band is observed to have a rather small vibrational shift of −0.844 cm−1. We expect one parallel and one perpendicular infrared-active band for the trimer but observe two parallel bands and one perpendicular band. Much larger vibrational shifts of −8.953 cm−1 for the perpendicular band and −8.845 cm−1 and +16.681 cm−1 for the parallel bands are observed. Vibrational shifts and possible vibrational assignments, in the case of the parallel bands of the trimer, are discussed using group theoretical arguments. |
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| Date de publication | 2019-04-14 |
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| Maison d’édition | American Institute of Physics |
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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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| 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 | 2b62d7fe-35b5-42ff-9cda-b8f3f3082d70 |
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| Enregistrement créé | 2021-03-18 |
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| Enregistrement modifié | 2021-03-18 |
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