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Author:McMahon, T.B.

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69 matching references were found.

Beauchamp, J.L.; Caserio, M.C.; McMahon, T.B., Ion-molecule reactions of tert-butyl alcohol by ion cyclotron resonance spectroscopy, J. Am. Chem. Soc., 1974, 96, 6243. [all data]

Blint, J.; McMahon, T.B.; Beauchamp, J.L., Gas phase ion chemistry of fluoromethanes by ion cyclotron resonance spectroscopy. New techniques for the determination of carbonium ion stabilities, J. Am. Chem. Soc., 1974, 96, 1269. [all data]

Wyatt, R.H.; Holtz, D.; McMahon, T.B.; Beauchamp, J.L., Acidity, basicity, and ion-molecule reactions of arsine in the gas phase by ICR spectroscopy, Inorg. Chem., 1974, 13, 1511. [all data]

McMahon, T.B.; Kebarle, P., Intrinsic acidities of substituted phenols and benzoic acids determined by gas phase proton transfer equilibria, J. Am. Chem. Soc., 1977, 99, 2222. [all data]

McMahon, T.B.; Northcott, C.J., The Fluoroformate Ion FCO2-: An ICR study of the gas phase lewis acidity of carbon dioxide and related isoelectronic species, Can. J. Chem., 1978, 56, 1068. [all data]

Clair, R.L.; McMahon, T.B., An ion cyclotron resonance study of base-induced elimination reactions of fluorinated alcohols and unimolecular loss of HF from chemically activated fluoroalkoxide ions, Int. J. Mass Spectrom. Ion Phys., 1980, 33, 21. [all data]

Farid, R.; McMahon, T.B., The gas phase acidities of fluorinated acetones. An ICR investigation of the role of fluorine substituents in the stabilization of planar carbanions, Can. J. Chem., 1980, 58, 2307. [all data]

Larson, J.W.; McMahon, T.B., Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements, J. Am. Chem. Soc., 1983, 105, 2944. [all data]

Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ion cyclotron resonance halide-exchange equilibria, J. Phys. Chem., 1984, 88, 1083. [all data]

Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Larson, J.W.; McMahon, T.B., Gas phase bihalide and pseudohalide ions. An ICR determination of hydrogen bond energies in XHY- species (X,Y = F, Cl, Br, CN), Inorg. Chem., 1984, 23, 2029. [all data]

Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

Caldwell, G.; McMahon, T.B.; Kebarle, P.; Bartmess, J.E.; Kiplinger, J.P., Methyl substituent effects in the gas phase acidities of halosubstituted oxygen acids. A realignment with substituent effects in solution, J. Am. Chem. Soc., 1985, 107, 80. [all data]

Larson, J.W.; McMahon, T.B., Fluoride and chloride affinities of the main group oxides, fluorides, oxofluorides, and alkyls. Quantitative scales of lewis acidities from ICR halide exchange equilibria, J. Am. Chem. Soc., 1985, 107, 766. [all data]

McMahon, T.B.; Kebarle, P., Bridging the gap. A continuous scale of gas phase basicities from methane to water from pulsed electron beam high pressure mass spectrometric equilibria measurements, J. Am. Chem. Soc., 1985, 107, 2612. [all data]

McMahon, T.B.; Kebarle, P., The formyl and isoformyl cations. A pulsed electron beam high pressure mass spectrometric study of the energetics of HCO+ and HOC+, J. Chem. Phys., 1985, 83, 3919. [all data]

McMahon, T.B.; Kebarle, P., Proton affinities of the hydrogen, methyl and trifluoromethyl halides from pulsed electron beam high pressure mass spectrometric equilibria measurements, Can. J. Chem., 1985, 63, 3160. [all data]

Hovey, J.K.; McMahon, T.B., C-Xe Bond strength in the methylxenonium cation determined from ion cyclotron resonance methyl cation exchange equilibria, J. Am. Chem. Soc., 1986, 108, 528. [all data]

McMahon, T.B.; Kebarle, P., Strong hydrogen bonding in gas-phase ions: A high pressure mass spectrometric study of formation and energetics of methyl fluoride proton bound dimer, J. Am. Chem. Soc., 1986, 108, 6502. [all data]

Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids, J. Am. Chem. Soc., 1987, 109, 6230. [all data]

Roy, M.; McMahon, T.B., Org. Mass Spectrom., 1982, 17, 392. [all data]

Bouchoux, G.; Defaye, D.; McMahon, T.B.; Likholyot, A.; Mo, O.; Yanez, M., Structural and energetic aspects of the protonation of phenol, catechol, resorcinol, and hydroquinone, Chem. Eur. J., 2002, 8, 2900-2909. [all data]

Szulejko, J.E.; McMahon, T.B., Progress Toward and Absolute Proton Affinity Scale, J. Am. Chem. Soc., 1993, 115, 7839. [all data]

Szulejko, J.E.; Hrusak, J.; McMahon, T.B., Combined experimental and theoretical study of the protonation of polyfluorobenzenes [C6H6 - nFn](n=0-6), J. Mass Spectrom., 1997, 32, 494. [all data]

Bouchoux, G.; Gal, J.F.; Maria, P.C.; Szulejko, J.E.; McMahon, T.B.; Tortajada, J.; Luna, A.; Yanez, M.; Mo, O., Gas-Phase Basicities of Acid Anhydrides, J. Phys. Chem. A., 1998, 102, 9183. [all data]

Szulejko, J.E.; McMahon, T.B.; Troude, V.; Bouchoux, G.; Audier, H.E., Structure and energetics of protonated omega-methoxy alcohols, J. Phys. Chem. A., 1998, 102, 1879. [all data]

Roy, M.; McMahon, T.B., The proton affinity of thioformaldehyde implications for the heat of formation of thioformaldehyde and thiolmethyl carbonium ion from ion cyclotron resonance investigations of the proton transfer reactions of [CH2SH]+, Org. Mass Spectrom., 1982, 8, 392-395. [all data]

Roy, M.; McMahon, T.B., The Anomalous Gas Phase Acidity of Ethyl Fluoride. An ab initio Investigation of the Importance of Hydrogen Bonding between Fluoride and sp2 and sp C-H Bonds., Can. J. Chem., 1985, 63, 3, 708, https://doi.org/10.1139/v85-117 . [all data]

Nieckarz, R.J.; Atkins, C.G.; McMahon, T.B., Effects of Isomerization on the Measured Thermochemical Properties of Deprotonated Glycine/Protic-Solvent Clusters, Chemphyschem, 2008, 9, 18, 2816-2825, https://doi.org/10.1002/cphc.200800525 . [all data]

Larson, J.W.; McMahon, T.B., Trends in Gas Phase Fluoride Ion Affinities of the Main Group Oxyfluorides and Fluoride Sulfides. Fluoride Adducts of FAsO, FPO, FPO2, F2SiO, F4SO, FBO, F2SiS, FPS, FAsS, F2S2, and S2O., Inorg. Chem., 1987, 26, 24, 4018, https://doi.org/10.1021/ic00271a011 . [all data]

Wilkinson, F.E.; Szulejko, J.E.; Allison, C.E.; Mcmahon, T.B., Fourier Transform Ion Cyclotron Resonance Investigation of the Deuterium Isotope Effect on Gas Phase Ion/Molecule Hydrogen Bonding Interactions in Alcohol-Fluoride Adduct Ions, Int. J. Mass Spectrom., 1992, 117, 487-505, https://doi.org/10.1016/0168-1176(92)80110-M . [all data]

Wilkinson, F.E.; Peschke, M.; Szulejko, J.E.; McMahon, T.B., Deuterium isotope effects on gas phase ion-molecule hydrogen-bonding interactions: Alcohol-alkoxide and alcohol-chloride adduct ions, Int. J. Mass Spectrom., 1998, 175, 1-2, 225-240, https://doi.org/10.1016/S0168-1176(98)00142-6 . [all data]

Bogdanov, B.; Peschke, M.; Tonner, D.S.; Szulejko, J.E.; McMahon, T.B., Stepwise solvation of halides by alcohol molecules in the gas phase, Int. J. Mass Spectrom., 1999, 187, 707-725, https://doi.org/10.1016/S1387-3806(98)14180-5 . [all data]

Wilkinson, F.E.; McMahon, T.B., Deuterium isotope effect on gas phase ion-molecule hydrogen- bonding interactions: multiply solvated fluoride, chloride, and alkoxide ions, Int. J. Mass Spectrom., 2000, 199, 1-3, 127-139, https://doi.org/10.1016/S1387-3806(00)00187-1 . [all data]

Bogdanov, B.; Lee, H.J.S.; McMahon, T.B., Influence of fluorine substitution on the structures and thermochemistry of chloride ion-ether complexes in the gas phase, Int. J. Mass Spectrom., 2001, 210, 387-402, https://doi.org/10.1016/S1387-3806(01)00404-3 . [all data]

Bofdanov, B.; McMahon, T.B., Structures, Thermochemistry, and Infrared Spectra of Chloride Ion-Fluorinated Acetone Complexes and Neutral Fluorinated Acetones in the Gas Phase: Experiment and Theory, Int. J. Mass Spectrom., 2002, 219, 3, 593-613, https://doi.org/10.1016/S1387-3806(02)00745-5 . [all data]

Burkell, J.L.; Fridgen, T.D.; McMahon, T.B., Gas-phase acidities and sites of deprotonation of 2-ketones and structures of the corresponding enolates, Int. J. Mass Spectrom., 2003, 227, 3, 497-508, https://doi.org/10.1016/S1387-3806(03)00102-7 . [all data]

Yamdagni, R.; McMahon, T.B.; Kebarle, P., Substituent Effects on the Intrinsic Acidities of Benzoic Acids Determined by Gas Phase Proton Transfer Equilibria Measurements, J. Am. Chem. Soc., 1974, 96, 12, 4035, https://doi.org/10.1021/ja00819a063 . [all data]

Kebarle, P.; McMahon, T.B., Intrinsic Acidities of Substituted Phenols and Benzoic Acids Determined by Gas Phase Proton Transfer Equilibria, J. Am. Chem. Soc., 1977, 99, 7, 2222, https://doi.org/10.1021/ja00449a032 . [all data]

Larson, J.W.; McMahon, T.B., Equilibrium Isotope Effects on the Hydration of Gas Phase Ions. The Effect of H-Bond Formation on Deuterium Isotopic Fractionation Factors for H3O+,H5O2+,F(HOH)-, and Cl(HOH)-, J. Am. Chem. Soc., 1988, 110, 4, 1087, https://doi.org/10.1021/ja00212a015 . [all data]

Larson, J.W.; Szulejko, J.E.; McMahon, T.B., Gas Phase Lewis Acid-Base Interactions. An Experimental Determination of Cyanide Binding Energies From Ion Cyclotron Resonance and High-Pressure Mass Spectrometric Equilibrium Measurements., J. Am. Chem. Soc., 1988, 110, 23, 7604, https://doi.org/10.1021/ja00231a004 . [all data]

Allison, C.E.; McMahon, T.B., How Strong is the Si=C Bond in Fluoro- and Methyl Substituted Silaethylenes? An Experimental Determination of Pi Bond Strengths, J. Am. Chem. Soc., 1990, 112, 5, 1672, https://doi.org/10.1021/ja00161a002 . [all data]

Dunbar, R.C.; McMahon, T.B.; Thölmann, D.; Tonner, D.S.; Salahub, D.R.; Wei, D., Zero-Pressure Thermal-Radiation-Induced Dissociation of Gas-Phase Cluster Ions: Comparison of Theory and Experiment for (H2O)2Cl- and (H2O)3Cl-, J. Am. Chem. Soc., 1995, 117, 51, 12819, https://doi.org/10.1021/ja00156a020 . [all data]

Li, C.; Ross, P.; Szulejko, J.; McMahon, T.B., High-Pressure Mass Spectrometric Investigations of the Potential Energy Surfaces of Gas-Phase Sn2 Reactions., J. Am. Chem. Soc., 1996, 118, 39, 9360, https://doi.org/10.1021/ja960565o . [all data]

Larson, J.W.; McMahon, T.B., Isotope Effects in Proton Transfer Reactions. An Ion Cyclotron Resonance Determination of the Equilibrium Deuterium Isotope Effect in the Bichloride Ion, J. Phys. Chem., 1987, 91, 3, 554, https://doi.org/10.1021/j100287a013 . [all data]

Norrman, K.; McMahon, T.B., Intramolecular solvation of carboxylate anions in the gas phase, J. Phys. Chem. A, 1999, 103, 35, 7008-7016, https://doi.org/10.1021/jp9908202 . [all data]

Dixon, D.A.; de Jong, W.A.; Peterson, K.A.; McMahon, T.B., Methyl cation affinities of rare gases and nitrogen and the heat of formation of diazomethane, J. Phys. Chem. A, 2005, 109, 18, 4073-4080, https://doi.org/10.1021/jp044561e . [all data]

Bogdanov, B.; McMahon, T.B., Gas phase S(N)2 reactions of halide ions with trifluoromethyl halides: Front- and back-side attack vs. complex formation, J. Phys. Chem. A, 2006, 110, 4, 1350-1363, https://doi.org/10.1021/jp0541011 . [all data]

Ziegler, B.E.; Gamble, T.N.; Li, C.; McMahon, T.B., Weak Ion-Molecule Interactions in the Gas Phase: A High-Pressure Mass Spectrometry and Computational Study of Chloride-Alkane Interactions, J. Phys. Chem. A, 2013, 117, 28, 5785-5793, https://doi.org/10.1021/jp403422q . [all data]

Campanaro, A.; Marvin, C.H.; Morehouse, S.P.; McMahon, T.B., A Gas-phase Anionic Analog of the Wittig Reaction. An Ion Cyclotron Resonance Study of the Gas Phase Ion Chemistry of Silyl Carbanions., Org. Mass Spectrom., 1988, 23, 9, 663, https://doi.org/10.1002/oms.1210230907 . [all data]

Farid, R.; McMahon, T.B., Gas-Phase Ion-Molecule Reactions of Alkyl Nitrites by Ion Cyclotron Resonance Spectroscopy, Int. J. Mass Spectrom. Ion Phys., 1978, 27, 2, 163, https://doi.org/10.1016/0020-7381(78)80037-0 . [all data]

Larson, J.W.; Clair, R.L.; McMahon, T.B., Bimolecular Production of Proton Bound Dimers in the Gas Phase. A Low Pressure Ion Cyclotron Resonance Technique for Examination of Solvent Exchange Equilibria and Determination of Single Molecule Solvation Energetics, Can. J. Chem., 1982, 60, 4, 542, https://doi.org/10.1139/v82-079 . [all data]

Larson, J.W.; McMahon, T.B., Formation, Thermochemistry, and Relative Stabilities of Proton - Bound dimers of Oxygen n - Donor Bases from Ion Cyclotron Resonance Solvent - Exchange Equilibria Measurements, J. Am. Chem. Soc., 1982, 104, 23, 6255, https://doi.org/10.1021/ja00387a016 . [all data]

Hovey, J.K.; McMahon, T.B., Bond Strength in the Methylkryptonium Ion Determined from Ion Cyclotron Resonance Methyl Cation Exchange Equilibria, J. Phys. Chem., 1987, 91, 17, 4560, https://doi.org/10.1021/j100301a028 . [all data]

Szulejko, J.E.; Fisher, J.J.; McMahon, T.B., A Pulsed Ionization High - Pressure Mass Spectrometric Study of Methyl Cation Transfer and Methyl Induced Clustering in Ether - Acetone Mixtures, Int. J. Mass Spectrom. Ion Proc., 1988, 83, 1-2, 147, https://doi.org/10.1016/0168-1176(88)80092-2 . [all data]

Bouchard, F.; Hepburn, J.W.; McMahon, T.B., Pulsed Laser Ionization High Pressure Mass Spectrometry - A New Route to Gas Phase Metal Ion Ligand Thermochemistry, J. Am. Chem. Soc., 1989, 111, 24, 8934, https://doi.org/10.1021/ja00206a035 . [all data]

Hop, C.E.C.A.; McMahon, T.B.; Willett, G.D., Determination of Bond Dissociation Energies via Energy Resolved Collision Induced Dissociation in a Fourier Transform Ion Cyclotron Resonance Spectrometer, Int. J. Mass Spectrom. Ion Proc., 1990, 101, 2-3, 191, https://doi.org/10.1016/0168-1176(90)87011-5 . [all data]

Allison, C.E.; Cramer, J.A.; Hop, C.E.C.A.; Szulejko, J.E.; McMahon, T.B., Strong Hydrogen Bonding in Gas - Phase Ions. A High - Pressure Mass Spectrometric Study of the Proton Affinity, Proton Transfer Kinetics, and Hydrogen - Bonding Capability of Iron Pentacarbonyl, J. Am. Chem. Soc., 1991, 113, 12, 4469, https://doi.org/10.1021/ja00012a014 . [all data]

Bauschlicher, C.W.; Bouchard, F.; Hepburn, J.W.; McMahon, T.B.; Surjasasmita, I.; Roth, L.M.; Gord, J.R., On the Structure of Al(Acetone)2+, Int. J. Mass Spectrom. Ion Proc., 1991, 109, 15, https://doi.org/10.1016/0168-1176(91)85094-3 . [all data]

Hop, C.E.C.A.; McMahon, T.B., High Pressure Mass Spectrometric Observation of Metal Carbonyl Alkyl Adduct Ions of Novel Structure, Inorg. Chem., 1991, 30, 13, 2828, https://doi.org/10.1021/ic00013a025 . [all data]

Hop, C.E.C.A.; McMahon, T.B., Observation of a Weakly Bound Mn(CO)5+/CH4 Complex, J. Am. Chem. Soc., 1991, 113, 1, 355, https://doi.org/10.1021/ja00001a050 . [all data]

Szulejko, J.E.; McMahon, T.B., A Pulsed Electron Beam, Variable Temperature, High Pressure Mass Spectrometric Reevaluation of the Proton Affinity Difference Between 2-Methylpropene and Ammonia, Int. J. Mass Spectrom. Ion Proc., 1991, 109, 279, https://doi.org/10.1016/0168-1176(91)85109-Y . [all data]

Szulejko, J.; McMahon, T.B., personal communication, 1992. [all data]

Tholman, D.; Tonner, D.S.; McMahon, T.B., Spontaneous Unimolecular Dissociation of Small Cluster Ions, (H3O)+(L)n and Cl-(H2O)n (n = 2-4), under Fourier Transform Ion Cyclotron Resonance Conditions, J. Phys. Chem., 1994, 98, 8, 2002, https://doi.org/10.1021/j100059a002 . [all data]

Norrman, K.; McMahon, T.B., Generation of Covalent and Electrostatic Complexes in Association Reactions of tert-Butyl Cation with Small Organics, J. Am. Chem. Soc., 1996, 118, 10, 2449, https://doi.org/10.1021/ja952311t . [all data]

McMahon, T.B.; Ohanessian, G., An Experimental and Ab Initio Study of the Nature of the Binding in Gas-Phase Complexes of Sodium Ions, Chem. Eur. J., 2000, 6, 16, 2931, https://doi.org/10.1002/1521-3765(20000818)6:16<2931::AID-CHEM2931>3.0.CO;2-7 . [all data]

Bouchard, F.; Brenner, V.; Carra, C.; Hepburn, J.W.; Koyanagi, G.K.; McMahon, T.B.; Ohanessian, G.; Peschke, M., Energetics and Structure of Complexes of Al+ with Small Organic Molecules in the Gas Phase, J. Phys. Chem. A, 1997, 101, 33, 5885, https://doi.org/10.1021/jp9703465 . [all data]

Hoyau, S.; Norrman, K.; McMahon, T.B.; Ohanessian, G., A Quantitative Basis for a Scale of Na+ Affinities of Organic and Small Biological Molecules in the Gas Phase, J. Am. Chem. Soc., 1999, 121, 38, 8864, https://doi.org/10.1021/ja9841198 . [all data]

Fridgen, T.D.; McMahon, T.B.; MacAleese, L.; Lemaire, J.; Maitre, P., Infrared Spectrum of the Protonated Water Dimer in the Gas Phase, J. Phys. Chem. A, 2004, 108, 42, 9008, https://doi.org/10.1021/jp040486w . [all data]