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Observation of a series of degenerate cyclic double, triple, and quadruple proton transfers in solid pyrazoles

✍ Scribed by Aguilar-Parrilla, Francisco; Scherer, Gerd; Limbach, Hans Heinrich; Foces-Foces, Maria de la Concepcion; Hernandez Cano, Felix; Smith, John A. S.; Toiron, Catherine; Elguero, Jose


Book ID
127130050
Publisher
American Chemical Society
Year
1992
Tongue
English
Weight
389 KB
Volume
114
Category
Article
ISSN
0002-7863

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Observation and characterization by 15N
✍ Ferdinand MΓ€nnle; Iwona Wawer; Hans-Heinrich Limbach πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 378 KB

Using dynamic 15N CPMAS NMR spectroscopy a novel double proton transfer was detected in the cyclic hydrogen bonded dimers of polycrystalline tSN,ZSN'-di-(4-bromophenyl)-formamidine. Rate constants of this process, which is degenerate within the margin of error, were obtained by lineshape (kl2 = 10 6