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dc.contributor.authorGascooke, J.-
dc.contributor.authorAlwahabi, Z.-
dc.contributor.authorKing, K.-
dc.contributor.authorLawrance, W.-
dc.identifier.citationThe Journal of Physical Chemistry A: Isolated Molecules, Clusters, Radicals, and Ions; Environmental Chemistry, Geochemistry, and Astrochemistry; Theory, 1998; 102(44):8505-8509-
dc.description© 1998 American Chemical Society-
dc.description.abstractHighly excited hexafluorobenzene (HFB) molecules in the electronic ground state were prepared by infrared multiphoton absorption by CO₂ laser pumping using the P(38) line at 1029.43 cm⁻¹. The vibrational deactivation of the highly excited HFB by monatomic collider gases was monitored by time-resolved infrared fluorescence (IRF). Deactivation measurements were made for the noble gas colliders He, Ne, Ar, Kr, and Xe. The bulk average energy transferred per collision, <<ΔΕ>>, for these colliders was found to increase from He through to Ar; however it subsequently decreased from Ar through to Xe. This is different than the trend found in the quasiclassical trajectory calculations by Lenzer et al., which predict a decrease in the average energy transferred per collision from He to Ar to Xe. (Calculations were not reported for Ne and Kr.) However, similar trends in related energy-transfer parameters have been reported for the deactivation of C₆F₁₄ and C₈F₁₈ by the same series of five noble gases. A comparison is made with previous experimental measurements for the colliders He and Ar which were obtained using UV excitation of the HFB. For the same monatomic colliders, the <<ΔΕ>> values for HFB are much greater than those for the closely related aromatics, benzene, toluene, and pyrazine.-
dc.publisherAMER CHEMICAL SOC-
dc.titleVibrational deactiviation of highly excited hexafluorobenzene-
dc.typeJournal article-
dc.identifier.orcidAlwahabi, Z. [0000-0003-4831-7798]-
dc.identifier.orcidKing, K. [0000-0003-2766-2330]-
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