Rotational resonance with multiple‐pulse scaling in solid‐state nuclear magnetic resonance

摘要: Multiple‐pulse techniques are applied to rotational resonance experiments in solid‐state nuclear magnetic resonance. The usual condition is satisfied when an integral multiple of the magic‐angle spinning speed equals difference isotropic chemical shifts two members a homonuclear spin‐1/2 pair. We show that sequences rapid periodic radio‐frequency pulses scale and rotate both Zeeman dipole–dipole Hamiltonians, leading modification introduction new, single‐ double‐quantum, resonances. Experimental results presented which demonstrate these effects spectra doubly 13C‐labeled solids.