Abstract
| - A wide range of sodalite framework materials, M8[TT‘O4]6X2 where T = Al, Ga, Si, T‘ = Be, Al, Si, Ge,have been characterized using 27Al, 29Si, and 71Ga magic angle spinning nuclear magnetic resonance (MASNMR) spectroscopy. Structural parameters, such as functions of the framework T−O−T‘ angle, correlatelinearly with the determined chemical shift values and provide relationships, as a function of T‘, which willfacilitate characterization of more complex zeolitic compounds containing such species. The effects of changinga particular neighboring framework cation on the resonance position is controlled by variations in bothframework bond angles/distances and electrostatic effects; these contributions are resolved.
|