Resolved Dipolar Coupling Spectra of Dilute Nuclear Spins in Solids

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Abstract
An elaboration of solid-state NMR double resonance yields detailed molecular structural information residing in the dipole-dipole interactions between a rare spin and its nearest abundant-spin neighbors. The experiment depends upon (1) suppression of dipolar interactions among the abundant spins, and (2) observation of oscillatory interchange of magnetization between individual rare spins and their neighbors. Structural and dynamical information can be had even from powdered or amorphous samples.