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Symmetry-based recoupling of O-17-H-1 spin pairs in magic-angle spinning NMR
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UNSPECIFIED (2006) Symmetry-based recoupling of O-17-H-1 spin pairs in magic-angle spinning NMR. Journal of Magnetic Resonance, Volume 179 (Number 1). pp. 38-48. doi:10.1016/j.jmr.2005.11.003 ISSN 1090-7807.
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Official URL: http://dx.doi.org/10.1016/j.jmr.2005.11.003
Abstract
We have performed magic-angle-spinning solid-state NM R experiments in which protons are recoupled to oxygen-17 nuclei by applying a symmetry-based recoupling sequence at the proton Larmor frequency. Two-dimensional quadrupole-dipole correlation spectra are produced, in which the second-order quadrupolar shift of the oxygen-17 central transition is correlated with the recoupled heteronuclear dipole-dipole interaction. These spectra are sensitive to the relative orientation of the electric field gradient at the site of the oxygen-17 nucleus and the O-H internuclear vector. We also demonstrate experiments in which polarization is transferred from protons to oxygen-17, and show that oxygen-17 signals may be selected according to the protonation state of the oxygen site. We discuss the small observed value of the heteronuclear dipolar splitting in the central-transition oxygen-17 spectra. (c) 2005 Elsevier Inc. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | Journal of Magnetic Resonance | ||||
Publisher: | Academic Press | ||||
ISSN: | 1090-7807 | ||||
Official Date: | March 2006 | ||||
Dates: |
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Volume: | Volume 179 | ||||
Number: | Number 1 | ||||
Number of Pages: | 11 | ||||
Page Range: | pp. 38-48 | ||||
DOI: | 10.1016/j.jmr.2005.11.003 | ||||
Publication Status: | Published |
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