VIBRATIONAL OVERTONE SPECTROSCOPY OF THE CH CHROMOPHORE IN JET-COOLED $CF_{3}H$ AND $CF_{2}HCl$.
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Date
1993
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
Excitation spectra of the 1st, 3rd, 4th, and 5th vibrational overtone levels of the CH chromophore in jet-cooled $CF_{3}H$ and $CF_{2}HCl$ were observed using infrared laser assisted photofragment spectroscopy (IRLAPS). The overtone spectra of these molecules at room temperature show large Fermi-resonance splittings due to the coupling between the CH stretch and $bend^{1}$, however thermal congestion obscures the observation of finer splittings. The application IRLAPS to measure the overtone spectra of the jet-cooled molecules removes much of the spectral congestion and allows us to observe the weaker coupling of the stretch-bend states to other states of the molecule.
Description
$^{1}$ H.-R. Dubal and M. Quack, J. Chem. Phys. 81.3779, 1984.
Author Institution: Department of Chemistry., University of Rochester
Author Institution: Department of Chemistry., University of Rochester