Two-dimensional exchange NMR in rotating solids: a technique to study very slow molecular reorientations.
A 2D expts. capable of detecting very slow mol. reorientations is proposed, which makes use of spinning sidebands obsd. in magic-angle-spinning spectra. An expression describing the spinning side band intensities of the 2D spectrum is given. The expt. is applied to dimethylsulfone. Exptl. and calcd. spectra show agree.
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