HIGH RESOLUTION INFRARED SPECTROSCOPY OF Rg-ETHYLENE COMPLEXES
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Date
1992
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Ohio State University
Abstract
A number of previous spectroscopic studies have been reported for the Ar-ethylene $complex^{1,2}$. Although the observed vibrational bands were structured in both cases, a complete rotational assignment was not possible in either. We report here the first rotationally resolved spectra for Ar-and Ne-ethylene. The spectra have been assigned and provide an unambiguous determination of the structures, in which the rare-gas atom lies in the plane of the ethylene molecule, next the double bond. Both the $v_{g}$ and $v_{11}$ monomer vibrational bands have been observed for these two systems. The transitions observed in the spectra appear as doublets, indicative of internal rotation of the ethylene sub-unit about the carbon double bond. Spectra have also been obtained for the $CO_{2}$-$C_{2}$$H_{4}$ complex, giving a structure in which the $CO_{2}$ lies above the ethylene plane and is coplanar with the carbon-carbon double bond.
Description
$^{1}.$ M.P. Casassa, D.S. Bomse and K.C. Janda, J. Chem. Phys 74, 5044 (1981); C.M. Western, M.P. Casassa and K.C. Janda, J. Chem. Phys. 80, 4781, (1984). $^{2}$. W.L. Liu, K. Kolenbrander and J.M. Lisy, Chem. Phys. Lett. 112, 585, (1984).
Author Institution: Department of Chemistry, University of North Carolina at Chapel Hill
Author Institution: Department of Chemistry, University of North Carolina at Chapel Hill