Zobrazeno 1 - 10 of 36 pro vyhledávání: '"D J, Sardella"'
1
Through-space13C-19F couplings in highly-crowded systems: Radial dependence and electronic effects
Autor: Li C. Hsee, D. J. Sardella
Publikováno v: Magnetic Resonance in Chemistry. 28:688-692
The helical molecule 1-fluorobenzo[ c] phenanthrene shows a large (17.4 Hz) 13C–19F coupling resulting primarily from direct through-space overlap between a fluorine lone pair and the sterically opposed CH bond. After application of corrections for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::333d7cea5078e8ce43b6b81e51ed6485
https://doi.org/10.1002/mrc.1260280806
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3
Two-bond deuterium isotope effects on13C chemical shifts. A measure of carboncarbon bond lengths
Autor: Alyaa Emad El-Din, D. J. Sardella
Publikováno v: Magnetic Resonance in Chemistry. 27:253-257
Two-bond deuterium-induced isotope effects (2Δ) have been studied in several neutral π-systems (6,6-dimethylfulvene, cyclohexene and cyclohexa-1,3-diene). Isotope effects on the 13C shifts of adjacent carbons are invariably to higher field, and var
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c43895d0770a53447ab1f20d2cf47f3d
https://doi.org/10.1002/mrc.1260270312
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6
Boron atom reactions with the halomethanes
Autor: P. Davidovits, D. J. Sardella, M. B. Tabacco, C. T. Stanton
Publikováno v: The Journal of Chemical Physics. 83:5595-5601
Rate constants have been measured for the reactions of boron atoms with a series of halomethanes. The experiments were performed in a linear flow tube apparatus at 300 K. The measured rate constants in units of cm3 molecule−1 s−1 are CCl4:9.5×10
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c77338e854ae3dfced50381fe72664a7
https://doi.org/10.1063/1.449683
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8
1H and13C spectra of fluorine-containing polycyclic aromatic hydrocarbons.1H19F and13C19F coupling across bay regions
Autor: E. Boger, D. J. Sardella
Publikováno v: Magnetic Resonance in Chemistry. 27:13-20
The 1H and 13C NMR spectra of several fluorine-substituted polycyclic aromatic hydrocarbons in which fluorine projects into a bay region were studied. Both protons and carbons of the sterically opposed CH bond show anomalously large F-induced shifts
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::213199ebf2a6e65ae4a58e4e5c886e2a
https://doi.org/10.1002/mrc.1260270104
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10
13C NMR spectra of 7-, 8-, 9- and 10-fluorobenzo[a]pyrene
Autor: E. Boger, D. J. Sardella
Publikováno v: Magnetic Resonance in Chemistry. 24:287-291
The 13C NMR spectra of 7-, 8-, 9- and 10-fluoro-benzo[a]pyrenes have been recorded and the chemical shifts of all protonated (and fluorine-substituted) carbons have been assigned. The effect of fluorine on carbon shifts (and also on electron densitie
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::583bf9a86197303e403eea2b1109a537
https://doi.org/10.1002/mrc.1260240404
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