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2H Double-Quantum NMR Spectroscopy for the Study of Molecular Motion in Solids

✍ Scribed by Melinda J. Duer; Clare Stourton

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 228 KB
Volume: 129
Category: Article
ISSN: 1090-7807
DOI: 10.1006/jmre.1997.1243

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✦ Synopsis

An experiment which separates 2 H spinning sideband patterns

In this work we propose a practicable solution to this according to the 2 H double-quantum chemical shift in a manner problem of resolution in 2 H NMR spectroscopy which still suitable for motional studies is proposed. The technique is successallows measurement of a spectrum from which motional fully applied to 4,4-azoxydianisole at 323 K to separately analyze details can be deduced. We propose an experiment which the motion of the aromatic and methyl deuterons. Comments are uses double-quantum (DQ) chemical shifts to separate 2 H made on the formation of a nematic mesophase in this material MAS spinning sideband patterns (or alternatively, broadline at 390 K in the light of the results of this NMR study. ᭧ 1997 spectra) in a two-dimensional experiment. DQ NMR spec-Academic Press troscopy for 2 H has been proposed in the past. Pioneering work by Pines and Vega (5-7) drew attention to its potential 20 years ago. However, it has never been taken up or devel-

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