Abstract
A novel and simple method for measuring heteronuclear dipolar spectra under magic-angle sample spinning is described; the present method utilizes a chemical-shift-anisotropy recovery technique exploited by Tycko, Dabbagh and Mirau in a two-dimensional NMR experimental scheme. The 13 C– 15 N dipolar powder spectrum was obtained to give a internuclear distance for a doubly labeled l-alanine. The present method will be extended to observe a heteronuclear dipolar interaction between 13 C and quadrupolar nuclei having integer spins such as 2 H or 14 N.
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