Electron spectroscopy of resonance-enhanced vibrational excitations of gaseous and solid tetrahydrofuran

[en] We report intramolecular vibrational excitation of tetrahydrofuran (THF) in both the gas and solid phase induced by 1-30 eV electrons. High-resolution electron-energy-loss spectra reveal selective vibrational enhancement of THF for different impact energies, indicating the presence of at least three resonances (i.e., temporary anion states), located near 4, 7.5, and 10 eV, as well as many possibly overlapping higher-lying resonances. We also report electron-energy-loss spectra for different THF film thicknesses. Besides fundamental vibrational excitation, we observe several energy loss peaks due to overtones and combination vibrational modes. The present vibrational losses are assigned in compliance with published optical measurements. The similarities between the solid THF and gaseous cyclopentane spectra suggest that the resonances in both molecules could have a common origin and hence need not be attributed to the presence of the oxygen nonbonding electrons in THF. © 1998 American Institute of Physics.

Disciplines :

Chemistry

Author, co-author :

Lepage, M.; Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine, Université de Sherbrooke, Sherbrooke, Que. J1H 5N4, Canada

Letarte, S.; Centre de Recherche Sur Les Propriétés des Interfaces et la Catalyse, Département de Physique, Université Laval, Que. G1K 7P4, Canada

Michaud, M.; Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine, Université de Sherbrooke, Sherbrooke, Que. J1H 5N4, Canada

Tollet, Françoise ; Université de Liège > Direction administrative de la faculté des sciences

Hubin-Franskin, Marie-Jeanne ; Université de Liège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)

Roy, D.; Centre de Recherche Sur Les Propriétés des Interfaces et la Catalyse, Département de Physique, Université Laval, Que. G1K 7P4, Canada

Sanche, L.; Département de Médecine Nucléaire et de Radiobiologie, Faculté de Médecine, Université de Sherbrooke, Sherbrooke, Que. J1H 5N4, Canada

Language :

English

Title :

Electron spectroscopy of resonance-enhanced vibrational excitations of gaseous and solid tetrahydrofuran

Publication date :

1998

Journal title :

Journal of Chemical Physics

ISSN :

0021-9606

eISSN :

1089-7690

Publisher :

American Institute of Physics, New York, United States - New York

Volume :

109

Issue :

Pages :

5980-5986

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 08 September 2021

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