HIGH RESOLUTION FT-IR SPECTROSCOPY OF TRANS-1,2-DIFLUOROETHYLENE-$D^{1}$
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Date
1992
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Journal ISSN
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Publisher
Ohio State University
Abstract
Because trans-1-2-difluoroethylene has no dipole moment, its structure cannot be readily determined by microwave spectroscopy. In previous reports, analyses have been given of several bands in the high resolution ($0.004 cm^{-1}$) spectra of the $d_{0}$ and $d_{2}$ isotopic species of $trans-1-2-difluoroethylene.^{1,2}$ Four well determined, independent moments of inertia were obtained. Now for the spectrum of the $d_{1}$ species, and analysis is reported of a C-type band due to out-of-plane CH flapping centered at $828 cm^{-1}$ and a partial analysis of an A-type band due to in-plane CH bending centered at $1274 cm^{-1}$. The two additional moments of inertia are sufficient to permit determination of the five structural parameters of trans-difluoroethylene. A comparison of the structures of the cis and trans isomers will be made in relationship to the notably higher electronic energy of the trans isomer.
Description
1. N. C. Craig, D. W. Brandon, S. C. Stone, and W. J. Lafferty, J. Phys. Chem. 96, (1992) in press. 2. N. C. Craig, S. C. Stone, and W. J. Lafferty, Forty-Sixth Symposium on Molecular Spectroscopy, Columbus, OH.
Author Institution: Department of Chemistry, Oberlin College; Molecular Physics Division, National Institute of Standards and Technology
Author Institution: Department of Chemistry, Oberlin College; Molecular Physics Division, National Institute of Standards and Technology