If we have to report a CF3 functional group containing a compound, then what is the range of the J value (coupling constant) in a 13C-NMR for CF3 carbon and carbon 'attached to' CF3 in simple aromatic ring system?
Prof. Tóth gave the correct ranges for trifluoromethylbenzene. To clear up any possible confusion, please see the attached data for trifluoromethylbenzene and fluorobenzene.