MILLIMETER WAVE SPECTRA OF THE $H_{2}-H_{2}O$ VAN DER WAALS COMPLEX
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Date
2000
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Twelve pure rotational transitions of the highly non-rigid $H_{2}-H_{2}O$ Van der Waals complex have been observed using a free jet expansion millimeter wave absorption spectrometer in the 70-210 GHz region. Following the recent infrared work of Weida and $Nesbitt^{a}$ all the transitions are believed to originate from the ortho-$H_{2} j=1,\Sigma$ hydrogen internal rotation state. The water internal rotor slates involved are the para-$H_{2}O \;0_{00}, \Sigma$ and the ortho-$H_{2}O \;1_{01}, \Pi_{f}$ and $\Pi_{e}$ states. In addition, four rotational transitions of the $H_{2}-D_{2} O$ complex have also been observed. Work is continuing in recording and analysing the spectra which will provide information on the potential energy surface for the complex and the interesting question of whether the acts as a proton acceptor or donor, something which may depend on the hydrogen internal rotor state.
Description
$^{a}$M.J Weida and D. J. Nesbitt, J. Chem. Phys. 101, 5824(1999).
Author Institution: Institute for Molecular Science
Author Institution: Institute for Molecular Science