2H natural-abundance MAS NMR spectroscopy:: An alternative approach to obtain 1H chemical shifts in solids

H-2 NMR was examined as an approach to determine H-1 chemical shifts in solids. For high-resolution observation, the line width due to H-2 quadrupole interaction and chemical-shift anisotropy was removed by magic-angle spinning and that due to H-1-H-2 dipolar interactions by H-1 decoupling. Further, we showed that the sensitivity can be enhanced by applying H-1 to H-2 cross polarization and by adding spinning-sideband spectra. These make it possible to obtain H-2 natural-abundance MAS spectra revealing highly resolved H-2 signals. The second-order quadrupole effects of H-2 are also examined.