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dc.creatorDehghany, M.en_US
dc.creatorAfshari, Mahinen_US
dc.creatorOliaee, J. N.en_US
dc.creatorMoazzen-Ahmadi, N.en_US
dc.creatorMcKellar, A. R. W.en_US
dc.date.accessioned2009-07-29T12:36:26Z
dc.date.available2009-07-29T12:36:26Z
dc.date.issued2009en_US
dc.identifier2009-RA-05en_US
dc.identifier.urihttp://hdl.handle.net/1811/37979
dc.descriptionAuthor Institution: Department of Physics and Astronomy, University of Calgary; Calgary, AB T2N 1N4, CANADA; Steacie Institute for Molecular Sciences, National Research; Council of Canada, Ottawa, ON K1A 0R6, CANADAen_US
dc.description.abstractInfrared spectra of N$_{2}$O trimers are studied using a tunable diode laser to probe a pulsed supersonic slit-jet expansion. A previous observation by R.E. Miller and L. Pedersen [J. Chem. Phys. \textbf{108}, 436 (1998)] in the N$_{2}$O \nub{1}+\nub{3} combination band region (~3480 cm$^{-1}$) showed the trimer structure to be noncyclic, with three inequivalent N$_{2}$O monomer units which could be thought of as an N$_{2}$O dimer (slipped antiparallel configuration) plus a third monomer unit lying above the dimer plane. The present observations cover the N$_{2}$O fundamental band regions \nub{3} (~1280 cm$^{-1}$) and \nub{1} (~2230 cm$^{-1}$). In the \nub{3} region, two trimer bands are assigned with vibrational shifts and other characteristics similar to those in the \nub{1}+\nub{3} region, but in the \nub{1} region all three possible trimer bands are observed. Relationships among the various bands such as rotational intensity patterns, vibrational shifts, and the properties of the related N$_{2}$O dimer, generally support the conclusions of Miller and Pedersen. Three trimer bands are also observed for the fully$\ ^{15}$N-substituted species in the \nub{1} region, and these results should aid in detection of the as-yet-unobserved pure rotational microwave spectrum of the trimer. Finally, three combination bands involving the intermolecular van der Waals modes at 2253.7, 2255.5, and 2269.4 cm$^{-1}$ have been measured. The analyses of these bands and the identification of the nature of the intermolecular modes involved are currently underway.en_US
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleNEW INFRARED SPECTRA OF THE NITROUS OXIDE TRIMERen_US
dc.typeArticleen_US


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