One- and two-dimensional 1H magic-angle spinning experiments on hydrous silicate glasses.
Applications of various one- and two-dimensional 1H magic-angle spinning NMR (MAS NMR) techniques for the elucidation of structural properties of hydrous silicate glasses are described. Advantages and limitations of one-dimensional expts. [MAS and combined rotation and multiple-puls spectroscopy (CRAMPS)] and of two-dimensional approaches (spin-exchange expts., \"MAS-CRAMPS\" correlation plus extended versions) are discussed. The various 1H MAS NMR techniques are illustrated by practical examples of spectra obtained from a hydrous silicate glass of Na2O.4SiO2.0.7H2O compn.
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