## Abstract The ^19^F NMR shieldings for several remotely substituted rigid polycyclic alkyl fluorides with common sets of substituents covering a wide range of electronic effects were calculated using the DFT‐GIAO theoretical model. The level of theory, B3LYP/6–311+G(2d,p), was chosen based on tri
19F chemical shifts of bridgehead fluorides
✍ Scribed by Tony K. Bradshaw; Philip T. Hine; Ernest W. Della
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 140 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The ^19^F chemical shifts of a series of bridgehead fluorides are reported. It is found that, contrary to earlier conclusions based on a limited number of substrates, the fluorine shifts occur randomly.
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## Abstract The ^13^C chemical shifts of the sixteen bridgehead substituted mono‐, di‐, tri‐ and tetrahaloadamantanes (halo = F, Cl, Br, I) and four mixed 1,3‐dihaloadamantanes are reported. The effect of bridgehead halogens on the shift values of carbons in β and δ positions is well correlated by
## Abstract The ^19^F substituent chemical shifts (SCS) of __meta__‐ and __para__‐benzoyl fluorides are found to correlate well with substituent parameters using the dual substituent parameter (DSP) equation, indicating that they reflect electronic perturbations induced by the substituent. The dire
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