Abstract: On the basis of the lone-pair orbital overlap theory that was developed earlier to account for the phenomenon of “through-space” FF nuclear spinspin coupling between intramolecularly crowded fluorine atoms, the existence of “through-space “NF coupling is predicted. This previously untested prediction is verified experimentally through the observation of a much larger lsN-I9F coupling constant for lSN-enriched 3, 4-dihydro-8- ...
