Study of stereochemical dependences of the direct13C−1H spin-spin coupling constants in vinylpyridines by the quantum-chemical INDO-RPA method
✍ Scribed by A. V. Afonin; N. M. Peruchena; L. Sosa; R. H. Contreras
- Publisher
- Springer
- Year
- 1997
- Tongue
- English
- Weight
- 227 KB
- Volume
- 46
- Category
- Article
- ISSN
- 1573-9171
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The signs of all ^13^C^19^F and ^1^H–^19^F coupling constants in fluorobenzene, some substituted derivatives, and in 2‐fluoropyridine have been related using single‐frequency ^13^C{^1^H} double resonance techniques. All ^13^C^19^F couplings in these compounds are shown to be positive
## Abstract Orientation effects of electronegative substituents on vicinal carbon‐proton coupling constants are studied in 1,2‐disubstituted propanes and are found to resemble those on vicinal proton‐proton coupling constants. Known relations for the orientation effect of substituents on synclinal
## Abstract Data on ^13^C chemical shifts and ^13^C^1^H spin coupling constants of norbornane (**1**), norbornene (**2**), norbornadiene (**3**), benzonorbornene (**4**) and benzonorbornadiene (**6**) are reported. The non‐equivalence in __J__(^13^CH) values determined from the two bridge methyle