1. Tetrahedral cation ordering in layer silicates by 29Si NMR spectroscopy
- Author
-
J. Sanz, C. P. Herrero, and J. M. Serratosa
- Subjects
NMR spectra database ,Crystallography ,Chemistry ,Homogeneous ,Materials Chemistry ,Tetrahedron ,Mineralogy ,General Chemistry ,Nuclear magnetic resonance spectroscopy ,Condensed Matter Physics ,Dispersion (chemistry) ,Layer (electronics) - Abstract
29 Si NMR spectra of layer silicates with a wide range of tetrahedral composition (Si/Al ratios from 7.7 to 2.7) indicate that Si, Al distribution is mainly controlled by the electrostatic requirement of homogeneous dispersion of Al, confirming our earlier conclusions derived from the analysis of natural samples of micas with Si/Al ratios near to 3. This requirement includes, as a partial aspect, the Loewenstein's rule which forbids the presence of Al in neighbouring tetrahedra.
- Published
- 1985