High-Resolution NMR of Solids

Several important NMR interactions are manifested in the solid state as signal broadening mechanisms (Maciel 1984; Oldfield and Kirkpatrick 1985; Opella et al 1981). Rapid tumbling in the liquid state averages orientation dependence, so these interactions appear (when they appear at all) as T1 relaxation mechanisms rather than as line broadening effects (Lyerla et al 1974). The most important of these are chemical shift anisotropy, dipolar coupling, conformation effects, and quadrupole splittings.

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