FUNDAMENTAL AND TORSIONAL COMBINATION BANDS OF N$_{2}$O-C$_2$H$_2$ AND N$_{2}$O-C$_2$D$_2$ IN THE N$_{2}$O $\nu_{1}$ REGION
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Date
2009
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Publisher
Ohio State University
Abstract
Spectra of the weakly-bound N$_{2}$O-C$_2$H$_2$ and N$_{2}$O-C$_2$D$_2$ complexes in the region of the N$_{2}$O $\nu_{1}$ fundamental band (~2224 cm$^{-1}$) are observed in a pulsed supersonic slit jet expansion probed with a tunable diode laser. Two bands are analyzed for each complex: the fundamental (N-N stretch), and a combination involving the intermolecular torsional (out-of-plane bend) vibration. The resulting torsional frequencies are 44.37 and 40.01 cm$^{-1}$ for the C$_2$H$_2$ and C$_2$D$_2$ complexes, respectively. This represents the first observation of the N$_{2}$O-C$_2$D$_2$ isotopomer, and the first direct determination of an intermolecular frequency for nitrous oxide - acetylene.
Description
Author 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, CANADA