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Hindered Rotation around a C− • PH Bond: A Single-Crystal EPR Study of the Diphenyldibenzobarrelenephosphinyl Radical

✍ Scribed by Brynda, Marcin; Berclaz, Théo; Geoffroy, Michel; Ramakrishnan, Geetha; Bernardinelli, Gérald


Book ID
126297030
Publisher
American Chemical Society
Year
1998
Tongue
English
Weight
122 KB
Volume
102
Category
Article
ISSN
1089-5639

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Hindered rotation around the N(sp2)-C(sp
✍ Alexandru T. Balaban; Cornelia Uncuţ/a; Mihai Elian; Filip Chiraleu; Antonie Din 📂 Article 📅 1984 🏛 Elsevier Science 🌐 French ⚖ 610 KB

Abstnct--Painvise chemical shift nonequivalence of the Z&methyl and 3,5-protons in 'H NMR spectra, as well as of the 2,6-methyl, 2,6-ring and 3,5-ring carbons in lrCNNMR spectra, was observed for N-alkyl-2,4,6-trimethylpyridinium salts 2. Dynamic NMR spectroscopy demonstrates appreciably higher acti