Article ID Journal Published Year Pages File Type
5406806 Journal of Magnetic Resonance 2009 5 Pages PDF
Abstract
Advanced nuclear magnetic resonance (NMR) techniques were applied to study the local environments of hydrogen in NaAlH4. Through a combined application of the magic echo (ME) and the magic Hahn echo (MHE) sequences the hetero- and homonuclear contributions to the dipolar second moment (M2) were determined separately. The obtained values are compared with the second moments calculated by the van Vleck formulae, using structural data determined by neutron scattering on NaAlD4. This comparison indicates structural differences between NaAlH4 and NaAlD4. A model is suggested for the orientation of the [AlH4]− tetrahedra in NaAlH4, for which the calculated second moments are in good agreement with the experimentally observed values.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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