## Abstract The magnitude of chemical shift nonequivalence (Δδ) in compounds having the general formula R^1^CH(COOR^2^)N^+^R^3^Me~2~X^−^ is discussed from the viewpoint of selective shielding of one of the geminal groups by the ester group in the preferred rotamer. In addition, a novel example of t
Anisochronism of large geminal groups in the 1H and 13C nuclear magnetic resonance spectra
✍ Scribed by Wladyslaw Biernacki; Janusz Da̧browski; Andrzej Ejchart
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 335 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The role of steric factors in magnetic non‐equivalence anisochronism of complex geminal groups and of their fragments in compounds of the general formula RCH(Ph)CH(COOR′)~2~ has been investigated. CMR anisochronism is more sensitive to conformational and other steric changes than is PMR.
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