, Volume 32, Issue 4, pp 583-594

Shift Anisotropy Tensors in Amorphous Natural-Abundance Solids: High-Resolution 29Si Chemical Shift Anisotropy Distributions under Very Slow Sample Rotation

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Abstract.

The magic-angle turning technique is applied to amorphous natural-abundance silicate materials and high-resolution silicon-29 correlations between the isotropic and anisotropic chemical shifts are obtained. Very narrow tilted spinning sideband patterns are resolved in the two-dimensional spectra whose line width corresponds to the natural line width of the silicon nuclei. Various numerical approaches are implemented to extract the distribution of the chemical shift anisotropy tensors in these materials and their results are compared.

Authors' address: Dimitris Sakellariou, Laboratoire Claude Fréjacques, Service de Chimie Moléculaire, Commissariat à l'Energie Atomique Saclay, 91191 Gif-sur-Yvette cedex, France