Slow turning reveals enormous quadrupolar interactions (STREAQI)

Authors

John Persons, University of Nebraska - LincolnFollow
Gerard S. Harbison, University of Nebraska - LincolnFollow

Date of this Version

April 2007

Comments

Published in Journal of Magnetic Resonance 186 (2007), doi:10.1016/j.jmr.2007.03.002 Copyright © 2007 Elsevier Inc. Used by permission. http://www.sciencedirect.com/science/journal/10907807

Abstract

We introduce a new solid-state NMR method, which uses very slow sample rotation to visualize NMR spectra whose width exceeds feasible spectrometer bandwidths. It is based on the idea that if we reorient a tensor by a known angle about a known axis, the shifts in the NMR frequencies observed across the spectral width allow us to reconstruct the entire tensor. Called STREAQI (Slow Turning Reveals Enormous Anisotropic Quadrupolar Interactions), this method allows us to probe NMR nuclei that are intractable to current methods. To prove the concept and demonstrate its promise we have implemented the method for several 79Br containing samples with quadrupolar coupling constants in the range of 10–50 MHz.