Cabocation NMR

The OH of 3-cyclohexenol can be removed using superacid:

The NMR of the cation can be recorded, at -80°:

The central 141.9 ppm carbon is typical of a double bond.

The 224.4 ppms are highly deshielded, but not as much as a localized carbocation, which would be around 330 ppm: