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Relationship between C(O)N Twist Angles and 17 O NMR Chemical Shifts in a Series of Twisted Amides
Author(s) -
Yamada Shinji
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199511131
Subject(s) - amide , twist , chemical shift , resonance (particle physics) , series (stratigraphy) , chemistry , carbon 13 nmr , crystallography , stereochemistry , nuclear magnetic resonance , computational chemistry , physics , mathematics , geometry , organic chemistry , atomic physics , paleontology , biology
A linear relationship exists between the twist angle of the C(O)N bond in 1 and the difference between the 17 O(or 13 C) NMR chemical shift of 1 and that of the corresponding amide 2 . These experimental results are of interest with regard to the discussion of the classical amide resonance model.