2H double-quantum MAS NMR spectroscopy as a probe of dynamics on the microsecond timescale in solids

Autor:	Stephen Wimperis, Marica Cutajar, Sharon E. Ashbrook
Rok vydání:	2006
Předmět:	Microsecond Solid-state nuclear magnetic resonance Chemistry Carbon-13 NMR satellite Quadrupole Magic angle spinning Analytical chemistry General Physics and Astronomy Fluorine-19 NMR Nuclear magnetic resonance spectroscopy Physical and Theoretical Chemistry Molecular physics Earth's field NMR
Zdroj:	Chemical Physics Letters. 423:276-281
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2006.03.065
Popis:	The sidebands observed in the magic angle spinning (MAS) NMR spectrum of a spin I = 1 2 H nucleus may be very strongly broadened if motion is present in the solid. The broadening arises from interference between the line-narrowing effects of MAS and the dynamics-driven reorientation of the 2 H quadrupole tensor. Here, we show that this motional broadening is absent or much reduced in the corresponding double-quantum MAS NMR spectrum. This observation suggests a new approach to studying dynamics in solids and examples are drawn from 2 H MAS NMR of oxalic acid dihydrate, sodium tetrathionate dihydrate, and the synthetic polymer PMMA.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fd995f0fe6fe23b635974a32d1be0605 https://doi.org/10.1016/j.cplett.2006.03.065 Zobrazit plný text záznamu Full Text from ScienceDirect