Observation of spin exchange by two-dimensional fourier transform 13C cross polarization-magic-angle spinning☆

Abstract The solid-state cross polarization and magic-angle spinning analog of an earlier 2-D FT experiment on liquids is introduced. This technique permits the observation of spin exchange processes. 13 C applications include examples of chemical exchange, spin diffusion, the effect of 14 N relaxation, and intrinsic T 2 effects.