Analysis of deuterium nuclear magnetic resonance line shapes in anisotropic media

Journal of Chemical Physics - Tập 86 Số 10 - Trang 5411-5420 - 1987
Richard J. Wittebort1, Edward T. Olejniczak2, Robert G. Griffin2
1Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
2Francis Bitter National Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

Tóm tắt

Methods for the analysis of motional effects on 2H NMR solid state line shapes are described. Several simple models of anisotropic motions in solids are presented from which line shapes and relaxation experiments are calculated. Using these methods order parameters of fast limit spectra can be explicitly evaluated. These methods are extended to include analysis of intermediate exchange spectra in terms of specific motional models. The effects of differential T2’s arising from exchange broadening on the line shape in powders are described. Methods for the calculation and analysis of T1 anisotropy in partially relaxed spectra of powders for both fast and intermediate exchange regimes are presented.

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