"Tunneling Dynamics In <span Class=""roman"">n</span><sub><span Class=""roman"">2</span></sub>−<span Class=""roman"">d</span><sub><span Class=""roman"">2</span></sub><span Class=""roman"">o</span> Observed In The <span Class=""roman"">od</span> Stretching Region"
Glorieux, R.
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https://hdl.handle.net/2142/111485
Description
Title
"Tunneling Dynamics In n2−d2o Observed In The od Stretching Region"
Author(s)
Glorieux, R.
Contributor(s)
Moazzen-Ahmadi, Nasser
Herman, Michel
Barclay, A.J.
Lauzin, Clément
Issue Date
2021-06-25
Keyword(s)
Clusters/Complexes
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.
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