## Abstract ^13^C NMR spectra of six epimeric substituted 4βhydroxypiperidines and two corresponding piperidines were recorded. Substituent parameters for equatorial methyl, __gem__βdimethyl, equatorial hydroxy and axial hydroxy groups were calculated from the ^13^C chemical shifts of these compoun
The origin of fluorine-19 and carbon-13 substituent chemical shifts in substituted benzyl fluorides
β Scribed by John Bromilow; Robert T.C. Brownlee; Alan V. Page
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- French
- Weight
- 193 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
## Abstract Carbonβ13 chemical shift parameters for equatorial and axial substituents in cyclohexane are reported for methyl, ethyl, isopropyl, methoxy and phthalimido substituents. The usefulness of the alkyl parameters is demonstrated by the agreement between calculated and observed ^13^C shifts
## Abstract The ^13^C NMR spectra of six hydroxybenzenes, all chlorobenzenes, all chlorophenols and eight chlorocatechols are measured and assigned. The additivity of the substituent effects and the usefulness of some corrective parameters are studied with regression analysis. The order of the chem
Ab initio IGLO (individual gauge for localized molecular orbital) methods of SCF-MO theory were used to extend studies of the conformational dependences of isotropic 13C NMR chemical shifts to n-hexane and three 1-substituted pentanes (X \ CN, OH, F). Isotropic shifts were obtained as a func-XCH 2 C