2H Natural-abundance MAS NMR spectroscopy: an alternative approach to obtain 1H chemical shifts in solids.
(2)H NMR was examined as an approach to determine (1)H chemical shifts in solids. For high-resolution observation, the line width due to (2)H quadrupole interaction and chemical-shift anisotropy was removed by magic-angle spinning and that due to (1)H-(2)H dipolar interactions by (1)H decoupling. Further, we showed that the sensitivity can be enhanced by applying (1)H to (2)H cross polarization and by adding spinning-sideband spectra. These make it possible to obtain (2)H natural-abundance MAS spectra revealing highly resolved (2)H signals. The second-order quadrupole effects of (2)H are also examined.
Mizuno
Takashi
T
JEOL Ltd., 3-1-2 Musashino Akishima Tokyo 196-8558, Japan. mizuno@kuchem.kyoto-u.ac.jp
Nemoto
Takahiro
T
Tansho
Masataka
M
Shimizu
Tadashi
T
Ishii
Hiroki
H
Takegoshi
K
K