Zobrazeno 1 - 10
of 121
pro vyhledávání: '"George N. Khairallah"'
Autor:
Athanasios Zavras, George N. Khairallah, Marjan Krstić, Marion Girod, Steven Daly, Rodolphe Antoine, Philippe Maitre, Roger J. Mulder, Stefanie-Ann Alexander, Vlasta Bonačić-Koutecký, Philippe Dugourd, Richard A. J. O’Hair
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)
Designing catalysts and understanding the influence of ligands for particular transformations remains a highly challenging task. Here, the authors show that bisphosphine ligands can alter the geometry of the active site in silver catalysts, driving p
Externí odkaz:
https://doaj.org/article/5c9942ddd8b84c90bbfe868edef555cf
Autor:
Geethika K. Weragoda, Howard Z. Ma, George N. Khairallah, Adam W. E. Stewart, Richard A. J. O'Hair, Allan J. Canty
Publikováno v:
Organometallics. 40:1822-1829
Palladium-catalyzed cross-coupling protocols have become a cornerstone in organic synthesis. Here, a gas-phase model of the Hiyama cross-coupling reaction was designed to shed light on the roles of coordinated anions (fluoride versus chloride) in tra
Autor:
S. Fern Lim, Samuel C. Brydon, George N. Khairallah, Zhonghua Ren, Jonathan M. White, Michael J. Rathjen, Richard A. J. O'Hair, Gabriel da Silva
Publikováno v:
The Journal of Physical Chemistry A. 123:8200-8207
The gas-phase ion–molecule identity exchange reactions of phenyl chalcogen iranium ions with alkenes have been examined experimentally in a linear ion trap mass spectrometer by isotope labeling experiments. The nature of both the alkene and the cha
Publikováno v:
Langeland, J, Khairallah, G N, Canty, A J & O'Hair, R A J 2019, ' Routes for the gas-phase total synthesis of dihydroxy magnesium carboxylate anions, [(RCO 2 )Mg(OH) 2 ] – (R = CH 3 and CH 3 (CH 2 ) 14 ) ', International Journal of Mass Spectrometry, vol. 436, pp. 91-100 . https://doi.org/10.1016/j.ijms.2018.11.004
Dihydroxy magnesium carboxylates, [(RCO2)Mg(OH)2]–, a previously unknown class of compounds, have recently been discovered in meteorites using electrospray ionisation (ESI) ultra high-resolution mass spectrometry (HRMS) and collision-induced dissoc
Autor:
Vlasta Bonačić-Koutecký, Marjan Krstić, George N. Khairallah, Qiuyan Jin, Richard A. J. O'Hair
Publikováno v:
ChemCatChem. 10:1173-1177
Translating a homogenous catalyst into a heterogeneous catalyst requires a fundamental understanding of how the catalyst "fits" into the zeolite and how the reaction is influenced. Previous studies of bimetallic catalyst design identified a potent co
Publikováno v:
European Journal of Mass Spectrometry. 24:43-48
Two gas-phase catalytic cycles involving C–F bond activation of trifluoroethanol and trifluoroacetic acid were detected by multistage mass spectrometry experiments. A binuclear dimolybdate centre [...
Autor:
Richard A. J. O'Hair, Jacob Schmidt, Matthew M. Meyer, Alireza Fattahi, Steven R. Kass, George N. Khairallah
Publikováno v:
International Journal of Mass Spectrometry. 418:180-187
Electrospray ionization of 2,6-naphthalenedicarboxylic acid readily affords its doubly deprotonated dicarboxylate dianion (12−). This species clusters with background water and added alcohols in an ion trap at ∼10−3 Torr. Sequential solvation i
Autor:
Neville J. A. Coughlan, Daniel Stares, Michael S. Scholz, George N. Khairallah, Brian D. Adamson, Benjamin L. Harris, S. Fern Lim, Philippe Maître, Jonathan M. White, Evan J. Bieske, Richard A. J. O'Hair, Michael J. Rathjen, Gabriel da Silva
Publikováno v:
The Journal of Organic Chemistry. 82:6289-6297
Collision-induced dissociation mass spectrometry of the ammonium ions 4a and 4b results in the formation of the seleniranium ion 5, the structure and purity of which were verified using gas-phase infrared spectroscopy coupled to mass spectrometry and
Autor:
Athanasios Zavras, George N. Khairallah, Vlasta Bonačić-Koutecký, Marjan Krstić, Philippe Dugourd, Richard A. J. O'Hair
Publikováno v:
International Journal of Mass Spectrometry
International Journal of Mass Spectrometry, Elsevier, 2017, 413, pp.97-105. ⟨10.1016/j.ijms.2016.05.022⟩
International Journal of Mass Spectrometry, Elsevier, 2017, 413, pp.97-105. ⟨10.1016/j.ijms.2016.05.022⟩
When the bis(diphenylphosphino)methane (dppm) ligated silver hydride nanocluster salt [Ag 3 (L) 3 ( μ 3 -H)](BF 4 ) 2 is allowed to react with NaBH 4 in a methanol/chloroform solution for 5 mins., and then diluted with acetonitrile and subjected to
Autor:
Samuel C. Brydon, Shea Fern Lim, Jonathan M. White, Richard A. J. O'Hair, Philippe Maître, George N. Khairallah, Estelle Loire, Gabriel da Silva
Publikováno v:
Journal of Organic Chemistry
Journal of Organic Chemistry, American Chemical Society, 2019, 84 (16), pp.10076-10087. ⟨10.1021/acs.joc.9b01264⟩
Journal of Organic Chemistry, American Chemical Society, 2019, 84 (16), pp.10076-10087. ⟨10.1021/acs.joc.9b01264⟩
Ion–molecule reactions between thiiranium ion 11 (m/z 213) and cyclohexene and cis-cyclooctene resulted in the formation of addition products 17a and 17b (m/z 295 and m/z 323, respectively) via an ...