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A PROTON MAGNETIC RESONANCE STUDY OF HINDERED INTERNAL ROTATION IN SOME SUBSTITUTED N,N-DIMETHYLAMIDES 1

✍ Scribed by Rogers, Max T.; Woodbrey, James C.

Book ID
121263050
Publisher
American Chemical Society
Year
1962
Tongue
English
Weight
973 KB
Volume
66
Category
Article
ISSN
0022-3654

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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