DOI | Resolve DOI: https://doi.org/10.1063/1.4739465 |
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Author | Search for: Afshari, M.; Search for: Dehghany, M.; Search for: McKellar, A. R. W1; Search for: Moazzen-Ahmadi, N. |
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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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Abstract | 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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Publication date | 2012-08-01 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 21269056 |
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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 | 39ae02ae-306b-4927-98da-5df8ef40eeed |
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Record created | 2013-12-03 |
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Record modified | 2020-04-21 |
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