SPECTROSCOPY AND STRUCTURE OF THE $-Ar_{1}$ AND $-Ar_{2}$ VAN DER WAALS COMPLEXES OF ORTHO- AND META- DIFLUOROBENZENE
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Date
1999
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Ohio State University
Abstract
One-colour resonance enhanced two-photon ionisation (1C-R2PI) spectroscopy has been used to measure the $S_{1}-S_{0}$ electronic spectra of the $-Ar_{1}$ and $-Ar_{2}$ van der Waals clusters of ortho- and meta- difluorobenzene (DFB). The vibrational structure near the $S_{1}-S_{0}$ origin band of the cluster species yields information concerning the van der Waals vibrational motion. Rotational band contours measured for several of these transitions for the $-Ar_{1}$ and $-Ar_{2}$ complexes assist in establishing the cluster geometries. A simple model for the van der Waals motion serves to rationalise our observations. The vibrational predissociation dynamics of the $-Ar_{1}$ clusters have also been examined using dispersed fluorescence spectroscopy.
Description
Author Institution: Molecular Dynamics Laboratory, School of Science, Griffith University