Improved resolution in proton NMR spectroscopy of powdered solids.

摘要: We present a new solid-state nuclear magnetic resonance experiment that yields, under CRAMPS decoupling conditions, significant reduction in proton line widths for powdered organic solids. This which relies on constant-time acquisition of the transverse magnetization, removes contribution nonrefocusable broadening from widths. Although this technique suffers relatively low sensitivity, we demonstrate paper its feasibility two model samples, L-alanine and dipeptide Ala-Asp. In both cases factor between 2 3 width is obtained most resonances.