H-1-H-1 double-quantum CRAMPS NMR at very-fast MAS (nu(R)=35 kHz): A resolution enhancement method to probe H-1-H-1 proximities in solids
authors Mafra, L; Gomes, JRB; Trebosc, J; Rocha, J; Amoureux, JP
nationality International
journal JOURNAL OF MAGNETIC RESONANCE
author keywords High-resolution H-1 NMR; H-1-H-1 decoupling; CRAMPS; 2D H-1-H-1 DQ-SQ; SAM3; Double-quantum spectroscopy; Homonuclear correlation
keywords NUCLEAR-MAGNETIC-RESONANCE; STATE NMR; SPECTROSCOPY; SYSTEMS; PULSE
abstract A High-resolution two-dimensional (2D) H-1 double-quantum (DQ) homonuclear recoupling experiments, combined with smooth amplitude-modulation (SAM) homonuclear decoupling is presented. The experiment affords highly resolved and clean H-1 DQ-SQ 2D spectra at very-fast MAS rates (nu(R) = 35 kHz). The method is well suited to probe H-1-H-1 distances in powdered solids and demonstrations are applied on a NaH2PO4 powdered sample, an inorganic compound having hydrogen bonding networks. (C) 2008 Elsevier Inc. All rights reserved.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 1090-7807
year published 2009
volume 196
issue 1
beginning page 88
ending page 91
digital object identifier (doi) 10.1016/j.jmr.2008.10.009
web of science category Biochemical Research Methods; Physics, Atomic, Molecular & Chemical; Spectroscopy
subject category Biochemistry & Molecular Biology; Physics; Spectroscopy
unique article identifier WOS:000262681100013
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