Multinuclear MAS NMR studies of sodalitic framework materials
Johnson, G. M., Mead, P. J., Dann, S. E. and Weller, M. T. (2000) Multinuclear MAS NMR studies of sodalitic framework materials. Journal of Physical Chemistry B, 104, (7), 1454-1463. (doi: 10.1021/jp9929521).
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A wide range of sodalite framework materials, M-8[TT'O-4](6)X-2 where T = Al, Ga, Si, T' = Be, Al, Si, Ge, have been characterized using Al-27, Si-29, and Ga-71 magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. Structural parameters, such as functions of the framework T-O-T' angle, correlate linearly with the determined chemical shift values and provide relationships, as a function of T', which will facilitate characterization of more complex zeolitic compounds containing such species. The effects of changing a particular neighboring framework cation on the resonance position is controlled by variations in both framework bond angles/distances and electrostatic effects, these contributions are resolved.
|Keywords:||nuclear-magnetic-resonance, x-ray-diffraction, si-29 chemical-shifts, solid-state nmr, aluminosilicate-sodalites, structuralcharacterization, crystal-structures, silica polymorphs, al-27, spectra|
Q Science > QD Chemistry
|Divisions:||University Structure - Pre August 2011 > School of Chemistry
|Date Deposited:||05 Jan 2006|
|Last Modified:||01 Jun 2011 11:02|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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