Satellite transition magic-angle spinning nuclear magnetic resonance spectroscopy of half-integer quadrupolar nuclei

The theory of satellite transition magic-angle spinning nuclear magnetic resonance (NMR) spectroscopy of half-integer quadrupolar spins is presented and a two-dimensional experiment that uses satellite transitions to obtain isotropic NMR spectra is described. Correlation of satellite and central transitions under magic-angle spinning generates coherence transfer echoes leading to isotropic NMR spectra of half-integer quadrupolar nuclei. Pulse sequences of the two-dimensional satellite transition experiment are described. Satellite transition excitation and coherence transfer are studied with numerical simulations. Experimental results with model samples show high efficiencies of the experiment for acquisition of high-resolution isotropic NMR of half-integer quadrupolar nuclei. (C) 2001 American Institute of Physics.