Angewandte Chemie International Edition in English

Kinetic 15N‐CPMAS‐NMR Study of a Double Proton Transfer in a Crystalline Malonaldehyde Diimine Derivative

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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 15N‐NMR spectra, which were recorded under the conditions of cross‐polarization and of sample rotation about the magic angle. (Figure Presented.) Copyright © 1987 by VCH Verlagsgesellschaft mbH, Germany