High-resolution two-dimensional NMR spectra of half-integer-spin quadrupolar nuclei from one-dimensional projections
نویسندگان
چکیده
منابع مشابه
Two-dimensional one pulse MAS of half-integer quadrupolar nuclei.
We show that the two-dimensional one pulse (TOP) representation of magic-angle spinning nuclear magnetic resonance data of half-integer quadrupolar nuclei has significant advantages over the conventional one-dimensional spectrum. The TOP spectrum, which correlates NMR frequency to spinning sideband order, provides a rapid determination of the number of sites as well as the size of the their qua...
متن کاملHigh-resolution multiple quantum MAS NMR spectroscopy of half-integer quadrupolar nuclei
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 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 ...
متن کاملComparison of high-resolution solid-state NMR MQMAS and STMAS methods for half-integer quadrupolar nuclei.
Several different amplitude-modulated two-dimensional high-resolution methods, based on MQMAS and STMAS, are compared. They include 3QMAS, 5QMAS, DQ-STMAS, and DQF-STMAS experiments. A new method, called t1-split-STMAS, is also proposed for spin-3/2 nuclei. The comparison is performed in terms of isotropic resolution and spectral-width, efficiency, and sensitivity to magic-angle offset and spin...
متن کاملNMR Characterization of Half-integer Quadrupolar Nuclei in Solids
für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...
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ژورنال
عنوان ژورنال: Chemical Physics Letters
سال: 2007
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2007.01.077