ROTATIONAL SPECTRA AND STRUCTURAL DYNAMICS OF SMALL CLUSTERS CONTAINING $H_{2}S$
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Date
1995
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Ohio State University
Abstract
Several small clusters containing an $H_{2}S$ molecule are being studied with the Balle/Flygare, pulsed beam FTMW spectrometer for comparison with their $H_{2}O$ counterparts. Included so far are $Ar-H_{2}S, Ar_{3}-H_{2}S$, and $N_{2}-H_{2}S$. For $Ar-H_{2}S$ earlier $reports^{1}$ were extended to a second series of transitions, the two now interpretable as $0_{00}$ and $1_{01}$ internal rotor states of the $H_{2}S$, as published for the $H_{2}O$ in $Ar-H_{2}O.^{2}$ Also, we find $Ar_{3}-H_{2}S$ to be a symmetric top with rotational properties quite similar to those of the $H_{2}O$ analogue. But the $N_{2}-H_{2}S$ dimer appears to differ substantially from $N_{2}-H_{2}O$. The latter has nearly linear N-N-H-O geometry with tunneling quartets caused by interchange of both pairs of $nuclci.^{3}$ The rotational transitions observed for $N_{2}-H_{2}S$, however, are doublets indicating a more or less T-shaped structure with internal rotation, in which only the protons tunnel.
Description
1. R. E. Bumgarner, D. J. Pauley, and S. G. Kukolich, J. Mol. Struct. 190, 163 (1988). 2. R. C. Cohen and R. J. Saykally, J. Chem. Phys. 98. 6007 (1993), and references therein. 3. Helen O. Leung, M. D. Marshall, R. D. Suenram, and F. J. Lovas, J. Chem. Phys. 90, 700 (1989).
Author Institution: University of Illinois, Urbana, IL 61801.
Author Institution: University of Illinois, Urbana, IL 61801.