Files in this item

FilesDescriptionFormat

application/pdf

application/pdf2345.pdf (20kB)
(no description provided)PDF

Description

Title:VIBRATION AND VIBRATION-TORSION LEVELS OF THE S1 AND GROUND CATIONIC D0+ STATES OF PARA-FLUOROTOLUENE AND PARA-XYLENE BELOW 1000 cm−1
Author(s):Tuttle, William Duncan
Contributor(s):Wright, Timothy G.; Whalley, Laura E.; Gardner, Adrian M.
Subject(s):Vibrational structure/frequencies
Abstract:We have employed resonance-enhanced multiphoton ionisation (REMPI) spectroscopy and zero-kinetic-energy (ZEKE) spectroscopy to investigate the first excited electronic singlet (textit{S}$_{1}$) state and the cationic ground state (textit{D}$_{0}$$^{+}$) of textit{para}-fluorotoluene (textit{p}FT) and textit{para}-xylene (textit{p}Xyl). Spectra have been recorded textit{via} a large number of selected intermediate levels, to support assignment of the vibration and vibration-torsion levels in these molecules and to investigate possible couplings._x000d_ _x000d_ The study of levels in this region builds upon previous work on the lower energy regions of textit{p}FT and textit{p}Xylfootnote{A. M. Gardner, W. D. Tuttle, L. Whalley, A. Claydon, J. H. Carter and T. G. Wright, textit{J. Chem. Phys.}, textbf{145}, 124307 (2016).}$^{,}$footnote{A. M. Gardner, W. D. Tuttle, P. Groner and T. G. Wright, textit{J. Chem. Phys.}, (2017, in press).}$^{,}$footnote{W. D. Tuttle, A. M. Gardner, K. O’Regan, W. Malewicz and T. G. Wright, textit{J. Chem. Phys.}, (2017, in press).} and here we are interested in how vibration-torsion (vibtor) levels might combine and interact with vibrational ones, and so we consider the possible couplings which occur. Comparisons between the spectra of the two molecules show a close correspondence, and the influence of the second methyl rotor in textit{para}-xylene on the onset of intramolecular vibrational redistribution (IVR) in the textit{S}$_{1}$ state is a point of interest. This has bearing on future work which will need to consider the role of both more flexible side chains of substituted benzene molecules, and multiple side chains._x000d_ _x000d_
Issue Date:6/23/2017
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:APS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/97178
DOI:10.15278/isms.2017.FC06
Date Available in IDEALS:2017-07-27


This item appears in the following Collection(s)

Item Statistics