Direct Characterization of Metal–Metal Bonds between Nuclei with Strong Quadrupolar Interactions via NMR Spectroscopy
نویسندگان
چکیده
منابع مشابه
Separate-local-field NMR spectroscopy on half-integer quadrupolar nuclei.
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 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...
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 کاملNMR heteronuclear correlation between quadrupolar nuclei in solids.
We show for the first time that it is possible to acquire high-resolution heteronuclear NMR correlation experiments in solid state between second-order-broadened half integer quadrupolar nuclei (i.e., 27Al and 17O) using the scalar J-coupling. The sensitivity of the experiment is dramatically improved at high fields (gain proportional to the fourth power of the principal field) with a combinati...
متن کاملHigh-resolution NMR spectroscopy in inhomogeneous fields via intermolecular multiple-quantum coherences between spin 1/2 and quadrupolar nuclei
Introduction In inhomogeneous fields, high-resolution NMR spectra can be achieved via homonuclear intermolecular multiple-quantum coherences (iMQCs) [1-3]. We ever proposed SEL-HOMOGENIZED, IDEAL and iDQF-HOMOGENIZED pulse sequences for this purpose [2-4]. To simplify the 2D spectra, selective RF pulses were used, which make them not applicable when the chemical shifts of solvent and solute are...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry Letters
سال: 2014
ISSN: 1948-7185
DOI: 10.1021/jz5023448