Search Results - "McMahon, T.B"

Catalyzed keto-enol tautomerism of ionized acetone: a Fourier transform ion cyclotron resonance mass spectrometry study of proton transport isomerization by Mourgues, P., Chamot-Rooke, J., van der Rest, G., Nedev, H., Audier, H.E., McMahon, T.B.

“…The unimolecular isomerization of CH 3COCH 3 +· 1 into its more stable enol counterpart CH 3C(OH)CH 2 +· 2 is known not to occur, as a significant energy…”
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Deuterium isotope effect on the radiatively induced unimolecular dissociation of small cluster ions by Scott Tonner, D., Thölmann, Detlef, McMahon, T.B.

“…The slow, low pressure, unimolecular dissociation reactions of the weakly bound cluster ions, [(CH 3) 2CO]·Cl −,(C 6H 6·Cl − and (CH 3OCH 3) n ·H 3O + ( n = 2,…”
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Ter-body intermediates in the gas phase: reaction of ionized enols with tert-butanol by van der Rest, G, Chamot-Rooke, J, Mourgues, P, McMahon, T.B, Audier, H.E

“…In the gas phase, the CH 2CHOH ·+ enol radical cation 1 as well as its higher homologues CH 3CHCHOH ·+ 2 and (CH 3) 2CCHOH ·+ 3, undergo exactly the same…”
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Deuterium isotope effects on gas phase ion-molecule hydrogen-bonding interactions: Alcohol-alkoxide and alcohol-chloride adduct ions by Wilkinson, F.E., Peschke, M., Szulejko, J.E., McMahon, T.B.

“…Fourier Transform Ion Cyclotron Resonance (FT-ICR) and High Pressure Mass Spectrometric (HPMS) measurements of the deuterium isotope effect and kinetics of…”
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Thermochemistry and structures of solvated SN2 complexes and transition states in the gas phase: experiment and theory by Bogdanov, B., McMahon, T.B.

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An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions by McMahon, T. B., Ohanessian, Gilles

“…Fourier transform ion cyclotron resonance (FT‐ICR) ligand exchange equilibrium experiments have been used to establish a relative scale of sodium binding free…”
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Gas phase infrared multiple-photon dissociation spectra of methanol, ethanol and propanol proton-bound dimers, protonated propanol and the propanol/water proton-bound dimer by Fridgen, Travis D, Macaleese, Luke, McMahon, Terry B, Lemaire, Joel, Maitre, Philippe

“…The infrared multiphoton dissociation (IRMPD) spectra of three homogenous proton-bound dimers are presented and the major features are assigned based on…”
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Thermochemistry and structures of solvated S N2 complexes and transition states in the gas phase: experiment and theory by Bogdanov, B., McMahon, T.B.

“…The standard enthalpy and entropy changes (Δ H° and Δ S°) for the formation of solvated S N2 complexes (S)X −(RY) (X, Y = Cl, Br; R = (CH 3) 2CH; S = CH 3OH,…”
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Investigations of the clustering reactions of protonated amino acid esters by high pressure mass spectrometry and quantum chemical calculations by Simon, A., McMahon, T.B.

“…The equilibria involved in the formation of the proton-bound dimers of the three simplest amino acid methyl esters (glycine, alanine and valine methyl esters)…”
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Activation of Unimolecular Reactions by Ambient Blackbody Radiation by Dunbar, R. C., McMahon, T. B.

“…The historical "radiation hypothesis" as a mechanism for activating unimolecular thermal dissociation of gas-phase molecules, long discredited on the authority…”
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Strong and very strong hydrogen bonding in fluoro-amine–fluoride systems by Nieckarz, R.J., Oldridge, N., McMahon, T.B.

“…The formation of strong and very strong hydrogen bonds between NF n H 3− n ( n = 0.2) and F − have been computationally investigated via B3LYP/6-311++G(d,p)…”
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Thermochemical ladders: scaling the ramparts of gaseous ion energetics by McMahon, T.B.

“…The use of multiple overlapping gaseous ion–molecule equilibrium measurements to construct thermochemical ladders is reviewed. The types of relative…”
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Protonation Thermochemistry of Selected Hydroxy- and Methoxycarbonyl Molecules by Bouchoux, Guy, Leblanc, Danielle, Bertrand, William, McMahon, Terance B, Szulejko, Jan E, Berruyer-Penaud, Florence, Mó, Otilia, Yáñez, Manuel

“…The gas-phase basicities of a representative set of hydroxy- and methoxycarbonyl compounds (hydroxyacetone, 1, 3-hydroxybutanone, 2,…”
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Isotope effects in dissociation reactions of proton bound amine dimers in the gas phase by Norrman, K., McMahon, T.B.

“…Kinetic and thermodynamic isotope effects on the unimolecular dissociation of proton bound dimers were studied in the gas phase using mass spectrometry…”
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Structures, thermochemistry, and infrared spectra of chloride ion–fluorinated acetone complexes and neutral fluorinated acetones in the gas phase: experiment and theory by Bogdanov, B, McMahon, T.B

“…The thermochemistry of chloride ion clustering onto acetone and four fluorinated acetones (CH 3C(O)CH 2F, CF 3C(O)CH 3, CF 3C(O)CF 2H, and CF 3C(O)CF 3) under…”
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The C 2H 7+ potential energy surface: a Fourier transform ion cyclotron resonance investigation of the reaction of methyl cation with methane by Fisher, J.J., Koyanagi, G.K., McMahon, T.B.

“…Fourier transform ion cyclotron resonance experiments have been carried out to probe the nature of the potential energy surface for the reaction of methyl…”
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“Proton-transport” catalysis in the gas phase. Keto-enol isomerization of ionized acetaldehyde by van der Rest, G., Nedev, H., Chamot-Rooke, J., Mourgues, P., McMahon, T.B., Audier, H.E.

“…Fourier transform ion cyclotron resonance experiments show that a variety of molecules catalyze the hydrogen transfer which converts ionized acetaldehyde CH…”
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Relationship between effective temperature of thermalized ions and ion source temperature by Norrman, K., McMahon, T.B.

“…The spontaneous dissociation of mixed proton bound dimers of nitrile bases has been studied using mass-analyzed ion kinetic energy spectra in a reverse…”
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Influence of fluorine substitution on the structures and thermochemistry of chloride ion–ether complexes in the gas phase by Bogdanov, B., Lee, H.J.S., McMahon, T.B.

“…The thermochemistry of the chloride ion clustering onto dimethyl ether, diethyl ether, and three fluorinated ethers (CH 3OCF 3, (CF 2H) 2O, and CF 3OCF 2H)…”
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Deuterium isotope effect on gas phase ion–molecule hydrogen-bonding interactions: multiply solvated fluoride, chloride, and alkoxide ions by Wilkinson, F.E, McMahon, T.B

“…Fourier transform ion cyclotron resonance (FTICR) measurements of solvent exchange equilibria, where the solvents differ only by a single deuterium…”
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