George Khairallah

Dissecting Transmetalation Reactions at the Molecular Level: Role of the Coordinated Anion in Gas-Phase Models for the Transmetalation Step of the Hiyama Cross-Coupling Reaction

Adam WE Stewart, Howard Z Ma, Geethika K Weragoda, George N Khairallah, Allan J Canty, Richard AJ O'Hair

Journal article  |  2021  |  ORGANOMETALLICS

Palladium-catalyzed cross-coupling protocols have become a cornerstone in organic synthesis. Here, a gas-phase model of the Hiyama..

Experimental and DFT Studies on the Identity Exchange Reactions between Phenyl Chalcogen Iranium Ions and Alkenes

Samuel C Brydon, Zhonghua Ren, Gabriel da Silva, S Fern Lim, George N Khairallah, Michael J Rathjen, Jonathan M White, Richard AJ O'Hair

Journal article  |  2019  |  JOURNAL OF PHYSICAL CHEMISTRY A

The gas-phase ion–molecule identity exchange reactions of phenyl chalcogen iranium ions with alkenes have been examined experiment..

Reactions of Thiiranium and Sulfonium Ions with Alkenes in the Gas Phase

Samuel C Brydon, Shea Fern Lim, George N Khairallah, Philippe Maitre, Estelle Loire, Gabriel da Silva, Richard AJ O'Hair, Jonathan M White

Journal article  |  2019  |  The Journal of Organic Chemistry

Ion–molecule reactions between thiiranium ion 11 (m/z 213) and cyclohexene and cis-cyclooctene resulted in the formation of additi..

Routes for the gas-phase total synthesis of dihydroxy magnesium carboxylate anions, [(RCO2)Mg(OH)(2)]-(R= CH3 and CH3(CH2)(14))

Jeppe Langeland, George N Khairallah, Allan J Canty, Richard AJ O'hair

Journal article  |  2019  |  INTERNATIONAL JOURNAL OF MASS SPECTROMETRY

Dihydroxy magnesium carboxylates, [(RCO2)Mg(OH)2]–, a previously unknown class of compounds, have recently been discovered in mete..

How to Translate the [LCu2(H)]( )-Catalysed Selective Decomposition of Formic Acid into H-2 and CO2 from the Gas Phase into a Zeolite.

Marjan Krstic, Qiuyan Jin, George N Khairallah, Richard AJ O'Hair, Vlasta Bonacic-Koutecky

Journal article  |  2018  |  CHEMCATCHEM

Translating a homogenous catalyst into a heterogeneous catalyst requires a fundamental understanding of how the catalyst “fits” in..

C-F bond activation of trifluoroethanol and trifluoroacetic acid catalysed by the dimolybdate anion, [Mo2O6(F)](-)

George N Khairallah, Tom Waters, Anthony G Wedd, Richard AJ O'Hair

Journal article  |  2018  |  EUROPEAN JOURNAL OF MASS SPECTROMETRY

Two gas-phase catalytic cycles involving C-F bond activation of trifluoroethanol and trifluoroacetic acid were detected by multist..

Watson-Crick Base Pair Radical Cation as a Model for Oxidative Damage in DNA

Linda Feketeova, Bun Chan, George N Khairaah, Vincent Steinmetz, Philippe Maitre, Leo Radom, Richard AJ O'Hair

Journal article  |  2017  |  JOURNAL OF PHYSICAL CHEMISTRY LETTERS

The deleterious cellular effects of ionizing radiation are well-known, but the mechanisms causing DNA damage are poorly understood..

Reactions of doubly deprotonated 2,6-naphthalenedicarboxylic acid with alcohols: Proton transfer versus solvation

George N Khairallah, Matthew M Meyer, Richard AJ O'Hair, Alireza Fattahi, Jacob Schmidt, Steven R Kass

Journal article  |  2017  |  INTERNATIONAL JOURNAL OF MASS SPECTROMETRY

Electrospray ionization of 2,6-naphthalenedicarboxylic acid readily affords its doubly deprotonated dicarboxylate dianion (12−). T..

Seleniranium Ions Undergo pi-Ligand Exchange via an Associative Mechanism in the Gas Phase

S Fern Lim, Benjamin L Harris, George N Khairallah, EJ Bieske, Philippe Maitre, Gabriel da Silva, Brian D Adamson, Michael S Scholz, Neville JA Coughlan, Richard AJ O'Hair, Michael Rathjen, Daniel Stares, Jonathan M White

Journal article  |  2017  |  JOURNAL OF ORGANIC CHEMISTRY

Collision-induced dissociation mass spectrometry of the ammonium ions 4a and 4b results in the formation of the seleniranium ion 5..

A one-pot route to thioamides discovered by gas-phase studies: palladium-mediated CO2 extrusion followed by insertion of isothiocyanates

Asif Noor, Jiawei Li, George N Khairallah, Zhen Li, Hossein Ghari, Allan J Canty, Alireza Ariafard, Paul S Donnelly, Richard AJ O'Hair

Journal article  |  2017  |  Chemical Communications

A new palladium mediated “one pot” synthesis of thioamides from aromatic carboxylic acids (ArCO2H + RNCS → ArC(S)NHR + CO2) was di..