Modulation of cross polarization in motionally averaged solids by variable angle spinning NMR

►In mobile solids, dipolar couplings are modulated as a function of spinning angle. ► The modulation affects the intensity and rate of cross polarization (CP). ► These effects have been simulated and measured from 0° to 90°. ► Good CP intensity can sometimes be more easily obtained away from the magic angle. ► CP must be optimized at different angles to develop new SAS and VAS experiments.