An analysis of the 'H and 19F NMR spectra of 2-fluoronaphthalene was performed. 'H-19F inter-ring coupling constants were found to be positive over an even number of intervening bonds between the coupled nuclei and negative over an odd number. Such a sign alternation was based on a positive value fo
Transmission mechanisms of four-bond 19F19F coupling constants in fluoropropenes: A theoritical and experimental study
✍ Scribed by M.A. Natiello; R.H. Contreras; H.O. Gavarini; I.D. Rae
- Book ID
- 107942109
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 918 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0301-0104
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📜 SIMILAR VOLUMES
Inner projections of the polarization propagator were used to study the indirect through-space transmission of the Fermi contact tern of C-F couplings via a C-X (X = F, H) intermediate bond. When X = 33 a large capability for trans- mitting this component is observed. But for X = F a notable inhibit
## 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
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