Effect of 1H-decoupling in two-dimensional multiple-quantum MAS NMR spectroscopy of 23Na in a hydrous layered silicate.
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.
Hanaya
M
M
Department of Chemistry, Faculty of Science, Tokyo Institute of Technology, Japan.
Harris
R K
RK
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D009682:Magnetic Resonance Spectroscopy; D017640:Silicates / Q000737:chemistry*
D017640:Silicates