The neutral vapors above liquid alcohol/ether mixtures, (diethyl ether/methanol, diethyl ether/ethanol, tetrahydrofuran/methanol, and tetrahydrofuran/ethanol) were co-expanded with He in a supersonic jet, ionized with a 118-nm vacuum ultraviolet laser, and detected in a time-of-flight mass spectrometer. In each case, features attributed to protonated alcohol-ether dimers and protonated ether monomers were observed, as well as those ions obtained by ionizing neat alcohol or ether samples alone. Theoretical calculations, carried out to establish the energetics of the various possible reactions leading to the formation of the observed binary adducts, indicate that the most thermodynamically favorable pathway corresponds to the addition of a protonated alcohol monomer to neutral ether.
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22 November 2004
Research Article|
November 11 2004
Mechanism for the formation of gas-phase protonated alcohol-ether adducts by VUV laser ionization and density-functional calculations
Selay Lam;
Selay Lam
Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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Y. J. Shi;
Y. J. Shi
Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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N. J. Mosey;
N. J. Mosey
Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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T. K. Woo;
T. K. Woo
Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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R. H. Lipson
R. H. Lipson
Department of Chemistry, University of Western Ontario, London, Ontario N6A 5B7, Canada
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J. Chem. Phys. 121, 10006–10014 (2004)
Article history
Received:
June 17 2004
Accepted:
August 23 2004
Citation
Selay Lam, Y. J. Shi, N. J. Mosey, T. K. Woo, R. H. Lipson; Mechanism for the formation of gas-phase protonated alcohol-ether adducts by VUV laser ionization and density-functional calculations. J. Chem. Phys. 22 November 2004; 121 (20): 10006–10014. https://doi.org/10.1063/1.1806421
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