ONE-DIMENSIONAL AND 2-DIMENSIONAL H-1 MAGIC-ANGLE-SPINNING EXPERIMENTS ON HYDROUS SILICATE-GLASSES

Applications of various one- and two-dimensional H-1 magic-angle spinn ing nuclear magnetic resonance (MAS NMR) techniques for the elucidatio n of structural properties of hydrous silicate glasses are described. Advantages and limitations of one-dimensional experiments [MAS and com bined rotation and multiple-puls spectroscopy (CRAMPS)] and of two-dim ensional approaches (spin-exchange experiments, ''MAS-CRAMPS'' correla tion plus extended versions) are discussed. The various H-1 MAS NMR te chniques are illustrated by practical examples of spectra obtained fro m a hydrous silicate glass of Na2O . 4SiO(2) . 0.7H(2)O composition.