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Effect of 1H-decoupling in two-dimensional multiple-quantum MAS NMR spectroscopy of 23Na in a hydrous layered
1Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, Japan.
Solid State Nuclear Magnetic Resonance
|May 1, 1997
Abstract:
In order to check the efficiency of high-power 1H decoupling when used with the two-dimensional multiple-quantum MAS method recently proposed to obtain isotropic spectra from quadrupolar nuclei, we applied this new technique to 23Na NMR for a hydrous layered silicate compound, makatite, with and without 1H decoupling. A remarkable improvement of the spectral resolution in the isotropic dimension was observed by the decoupling, showing that it is effective in the 2D MQ-MAS method and suggesting that proton decoupling should be generally applied in 23Na experiments concerning these kinds of compound.