title: Uncoupling of local field spectra in nuclear magnetic resonance: determination of atomic positions in solids.
abstract: Solid state nuclear magnetic resonance as a method of determining crystal structure has had limited success. Three distinct reasons for this failure can be identified when the resonance spectrum is of a dilute spin species in the presence of another abundant species. Two of these difficulties, and in part the third, can be mitigated by a family of coherent averaging techniques in double resonance, with considerably improved prospects for locating the rare spins with respect to their nearby neighbors. A particularly advantageous procedure is described and possible applications are discussed.
mesh_terms: D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003461:Crystallography; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008956:Models, Chemical