Quantitative structure parameters from the NMR spectroscopy of quadrupolar nuclei
نویسندگان
چکیده
منابع مشابه
The Structure of Glasses Studied by MAS-NMR Spectroscopy of Quadrupolar Nuclei *
High-resolution solid state N M R spectroscopy of quadrupolar nuclei (preferentially n B and A1) has been employed to study the microstructure of glasses. Importance has been attached to the extraction of the fundamental N M R parameters like chemical shift, quadrupole coupling constant etc., from the spectra, first of all by applying satellite transition spectroscopy. Exemplary results are rep...
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New approaches to the characterization of resonances in the solid-state NMR spectroscopy of half-integer quadrupolar nuclei are explored, on the basis of the acquisition of heteronuclear separate-local-field spectra on rotating solids. In their two-dimensional version, these experiments correlate for each chemical site a second-order quadrupolar MAS powder pattern with the dipolar MAS sideband ...
متن کاملHigh resolution 3D exchange NMR spectroscopy and the mapping of connectivities between half-integer quadrupolar nuclei.
A novel approach to the determination of structure and potential dynamics in the solid-state NMR spectroscopy of half-integer quadrupolar nuclei is proposed and demonstrated. The new experiment combines into a single three-dimensional sequence, 2D multiple-quantum magic-angle-spinning NMR and 2D exchange NMR protocols. The result separates for each inequivalent chemical site its spin-diffusion ...
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We demonstrate the utility of a two-pulse sequence in obtaining high-resolution solid state NMR spectra of half-integer quadrupolar nuclei with magic-angle-spinning (MAS). The experiment, which utilizes multiple/single-quantum correlation, was first described in a different form by Frydman and Harwood [J. Am. Chem. Soc. 117 (1995) 5367] and yields high-resolution isotropic NMR spectra where shi...
متن کاملNew methods and applications in solid-state NMR spectroscopy of quadrupolar nuclei.
Solid-state nuclear magnetic resonance (NMR) spectroscopy has long been established as offering unique atomic-scale and element-specific insight into the structure, disorder, and dynamics of materials. NMR spectra of quadrupolar nuclei (I > (1)/2) are often perceived as being challenging to acquire and to interpret because of the presence of anisotropic broadening arising from the interaction o...
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ژورنال
عنوان ژورنال: Pure and Applied Chemistry
سال: 2016
ISSN: 1365-3075,0033-4545
DOI: 10.1515/pac-2015-0801