Carbon-13 spin-lattice relaxation times and nuclear overhauser enhancements in some simple fluorocarbons

Carbon-13 spin-lattice relaxation times (T₁) and ¹³C-{¹⁹F} nuclear Overhauser enhancement (NOE) factors have been measured for some simple fluorocarbons by pulse-Fourier transform methods—‘progressive saturation’ and ‘dynamic Overhauser enhancement’. The NOE factors are shown to be large for ¹³C with directly bonded fluorines, and the values for T₁ and the NOE factors are similar to those obtained elsewhere on the corresponding hydrocarbons.