A nuclear magnetic resonance determination of the barrier to internal rotation in phenylethane
✍ Scribed by Ted Schaefer; Leonard Kruczynski; Walter Niemczura
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 205 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0009-2614
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📜 SIMILAR VOLUMES
## Abstract The barrier to internal rotation in a series of __p__‐substituted acetophenones has been determined by means of low temperature carbon‐13 n.m.r. and total bandshape analysis, resulting in: Δ__G__ = 5·4 ± 0·1 kcal mol^−1^ (22·4 ± 0·4 kJ mol^−1^) for the unsubstituted acetophenone. The su
## Abstract The rotational barriers about the CN bond of the __N__,__N__‐dimethylamides of propiolic, methylpropiolic and phenylpropiolic acids have been determined by the iterative total line shape nuclear magnetic resonance method.
## Abstract The rotational barriers about the CN bond of the N,N,N′,N′‐tetramethyldiamides of phthalic, isophthalic and terephthalic acids have been determined by the iterative total line shape NMR method. Some evidence about the conformation of these compounds in solution has also been obtained b