ISSN:
0749-1581
Schlagwort(e):
Solid-state NMR
;
Magic-angle spinning NMR
;
Quadrupolar nuclei
;
Spectral analysis
;
23Na MAS NMR
;
Inorganic compounds
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
A simple procedure is presented for the determination of the asymmetry parameter of the electric field gradient, the quadrupole coupling constant, the second-order quadrupolar shift and the isotropic chemical shift of quadrupolar nuclei with half-integer spin directly from the experimental magic angle spinning (MAS) NMR spectra of powder samples measured at a single magnetic field. General equations applicable to any half-integer spin nucleus and the specific expressions for 23Na and 27 Al are given. The simple calculations can easily be performed with a pocket calculator and avoid any spectral simulation or lengthy computer work. The method was applied to a series of 23Na MAS NMR spectra of selected sodium compounds and the agreement of the results with those of computer simulations is demonstrated.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/mrc.1260290914
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