Stereo-electronic effects on carbon-13 and hydrogen chemical shifts of bicyclic alcohols
β Scribed by P.R Seidl; J.G.R Tostes; J.W.de M Carneiro; C.A Taft; J.F Dias
- Book ID
- 114141361
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 107 KB
- Volume
- 539
- Category
- Article
- ISSN
- 0166-1280
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π SIMILAR VOLUMES
The shielding observed in the chemical shifts of carbon atoms subjected to steric compression was originally attributed to carbonΓhydrogen bond polarization. There is increasing evidence that this is not universally the case and theoretical studies reveal that changes in dihedral angles may be respo
## Abstract Carbonβ13 chemical shifts of fourteen __para__βsubstituted benzylbenzenes have been determined. The relative substituent chemical shifts (SCS) of the methylene carbons and the aromatic ring carbons (Cβ4, Cβ1β² and Cβ4β²) correlated well with the Hammett substituent effects using the dual