Griffin, J.M.; Yates, Jonathan R.; Berry, Andrew; Wimperis, Stephen; Ashbrook, Sharon E.
High-resolution 19F magic angle spinning (MAS) NMR spectroscopy is used to study disorder and bonding in a crystalline solid. 19F MAS NMR reveals four distinct F sites in a 50% fluorine-substituted deuterated hydrous magnesium silicate (clinohumite, 4Mg2SiO4· Mg(OD1-xFx)2 with x = 0.5), indicating extensive structural disorder. The four 19F peaks can be assigned using density functional theory (DFT) calculations of NMR parameters for a number of structural models with a range of possible local...[Show more]
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