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Kinetic 15 N‐CPMAS‐NMR Study of a Double Proton Transfer in a Crystalline Malonaldehyde Diimine Derivative
Author(s) -
Limbach HansHeinrich,
Wehrle Bernd,
Zimmermann Herbert,
Kendrick Ray D.,
Yani Costantino S.
Publication year - 1987
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.198702471
Subject(s) - tautomer , magic angle , chemistry , diimine , derivative (finance) , analytical chemistry (journal) , solid state , crystallography , materials science , stereochemistry , organic chemistry , financial economics , catalysis , economics
Solid state effects gave rise to an energy difference of about 4 kJ mol −1 between the tautomers 1 and 2. This could be deduced from dynamic 15 N‐NMR spectra, which were recorded under the conditions of cross‐polarization and of sample rotation about the magic angle.