¹⁹F NMR study of 1‐halo‐F‐adamantanes

An ‘anomalous’ variation of β‐fluorine chemical shifts with respect to the inductive effect in the ¹⁹F NMR of a series of 1‐halo‐F‐adamantanes is reported. These fluorine chemical shifts are similar to the hydrogen chemical shift anomaly found in the corresponding hydrocarbon halides. Whereas the γ‐hydrogen chemical shifts can be rationalized by the inductive effect, the γ‐fluorine chemical shifts have the same ‘anomalous’ variation as found in the β‐fluorine chemical shifts.