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A Study of Hindered Internal Rotation in Some N-Vinyl-Substituted Amides by Nuclear Magnetic Resonance Spectroscopy 1

✍ Scribed by Gehring, D. G.; Mosher, W. A.; Reddy, G. S.

Book ID
127003296
Publisher
American Chemical Society
Year
1966
Tongue
English
Weight
286 KB
Volume
31
Category
Article
ISSN
0022-3263

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## Abstract The NMR variable temperature behaviour of __N__‐aroyl‐ and __N__‐thioaroyl‐__N__′‐piperonylpiperazines was investigated. The largest chemical shift separation between the exchanging methylene groups, and the highest energy barrier, is found for the thioamide compounds. Results from semi