Zobrazeno 1 - 9
of 9
pro vyhledávání: '"John M. Garver"'
Publikováno v:
The Journal of Organic Chemistry. 79:11020-11028
The gas-phase reactions of carbon- and nitrogen-centered nucleophiles with polyfluorobromobenzenes were examined in a selected-ion flow tube (SIFT) and modeled computationally at the MP2/6-31+G(d,p)//MP2/6-31+G(d) level. In the gas-phase experiments,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b2f6a14277318c36262d8afaee82987
https://doi.org/10.1021/jo502039h
https://doi.org/10.1021/jo502039h
Autor:
Benjamin B. Worker, Charles M. Nichols, Nadine Wehres, Veronica M. Bierbaum, John M. Garver, Zhibo Yang
Publikováno v:
International Journal of Mass Spectrometry. :182-190
Our recent studies of the α-effect (enhanced reactivity of nucleophiles with lone pair electrons adjacent to the attacking group) have shown increased nucleophilicity for HOO− in a series of bimolecular substitution (SN2) reactions in the gas phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::954916c4387d0676bbe89942d97a7346
https://doi.org/10.1016/j.ijms.2012.07.016
https://doi.org/10.1016/j.ijms.2012.07.016
Autor:
Scott W. Wren, Veronica M. Bierbaum, Kristen M. Vogelhuber, Leonid Sheps, W. C. Lineberger, John M. Garver, Shuji Kato
Publikováno v:
Journal of the American Chemical Society. 134:6584-6595
The negative ion chemistry of five azine molecules has been investigated using the combined experimental techniques of negative ion photoelectron spectroscopy to obtain electron affinities (EA) and tandem flowing afterglow-selected ion tube (FA-SIFT)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::700d4883ba90a592b7cf1645c5c908a1
https://doi.org/10.1021/ja209566q
https://doi.org/10.1021/ja209566q
Autor:
John M. Garver, Scott Gronert, Charles M. Nichols, Benjamin B. Worker, Zhibo Yang, Veronica M. Bierbaum
Publikováno v:
International Journal of Mass Spectrometry. :244-250
Recently we reported experimental validation of the α-effect in the gas phase. However, an earlier study by our group showed a lack of enhanced reactivity in a series of S N 2 reactions of α-nucleophiles with methyl chloride conflicting with comput
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::709ded8c921313837a4aca61c0be6924
https://doi.org/10.1016/j.ijms.2012.02.014
https://doi.org/10.1016/j.ijms.2012.02.014
Publikováno v:
Journal of the American Chemical Society. 133:13894-13897
The α-effect-enhanced nucleophilicity of an anion with a lone pair of electrons adjacent to the attacking atom-has been well documented in solution; however, there is continuing disagreement about whether this effect is a purely solvent-induced phen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e817d4e5e4fe526e4f3d907ce5eb37d8
https://doi.org/10.1021/ja205741m
https://doi.org/10.1021/ja205741m
Publikováno v:
International Journal of Mass Spectrometry. 301:151-158
The competition between substitution (S N 2) and elimination (E2) has been studied for the reactions of methyl, ethyl, isopropyl, and tert- butyl iodide with Cl − , CN − , and HS − in the gas phase. Previous studies have shown a dominance of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7af48e5d884826811a4c5b033a0b8caa
https://doi.org/10.1016/j.ijms.2010.08.008
https://doi.org/10.1016/j.ijms.2010.08.008
Autor:
Kenneth Charles Westaway, Yao-ren Fang, Veronica M. Bierbaum, Nicole Eyet, Stephanie M. Villano, John M. Garver
Publikováno v:
Journal of the American Chemical Society. 132:3808-3814
Direct comparisons of the reactivity and mechanistic pathways for anionic systems in the gas phase and in solution are presented. Rate constants and kinetic isotope effects for the reactions of methyl, ethyl, isopropyl, and tert-butyl iodide with cya
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd16cb0a348ea306b65b2783cd026f51
https://doi.org/10.1021/ja909399u
https://doi.org/10.1021/ja909399u
Autor:
W. Carl Lineberger, Kristen M. Vogelhuber, Shuji Kato, John M. Garver, Scott W. Wren, Zhibo Yang, Veronica M. Bierbaum
Publikováno v:
Journal of the American Society for Mass Spectrometry. 22
The gas phase reactivity of 1,3,5-triazine with several oxyanions and carbanions, as well as amide, was evaluated using a flowing afterglow-selected ion flow tube mass spectrometer. Isotopic labeling, H/D exchange, and collision induced dissociation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5bb6379ad308cbca905caf343ad001b
https://doi.org/10.1007/s13361-011-0133-9
https://doi.org/10.1007/s13361-011-0133-9
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