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Title:Tunneling Dynamics In n2d2o Observed In The od Stretching Region
Author(s):Glorieux, R.
Contributor(s):Moazzen-Ahmadi, Nasser; Herman, Michel; Barclay, A.J.; Lauzin, Clément
Abstract:The rovibrational spectra of \chem{N_2-D_2O} and \chem{N_2-DOH} were measured around the \chem{OD} stretching region. A combination band involving the in-plane \chem{N_2} bend intermolecular vibration was also observed in the same frequency range. These bands were measured at the University of Calgary using a pulsed-slit supersonic jet expansion and a mid-infrared tunable optical parametric oscillator. The spectra were analyzed by considering the feasible tunneling motions and fit to a series of independent asymmetric rotors. The rotational constants of the four tunneling components of \chem{N_2-D_2O} were retrieved for the excited vibrational states. Small vibrational blue shifts of $0.6~\wn$ and $1.8~\wn$ compared to the \chem{D_2O} monomer band origins were determined for the symmetric and asymmetric stretches, respectively. A two order of magnitude larger tunneling splittings is observed for the asymmetric \chem{OD} stretching excitation compared to the symmetric one. This last finding indicate a significant change of the intermolecular dynamics due to the intramolecular asymmetric \chem{OD} vibration.
Issue Date:2021-06-25
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper / Presentation
Date Available in IDEALS:2021-09-24

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