Rotationally induced triple quantum coherence excitation in MAS NMR spectroscopy of I=5/2 spins

Authors
Mildner, T Smith, ME Dupree, R
Citation
T. Mildner et al., Rotationally induced triple quantum coherence excitation in MAS NMR spectroscopy of I=5/2 spins, CHEM P LETT, 301(3-4), 1999, pp. 389-394
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
301
Issue
3-4
Year of publication
1999
Pages
389 - 394
Database
ISI
SICI code
0009-2614(19990226)301:3-4<389:RITQCE>2.0.ZU;2-A
Abstract
Rotationally induced excitation of triple quantum coherences is demonstrate d unequivocally for I = 5/2 nuclei from comparison of the variation of the observed and simulated lineshapes as a function of spin-lock time. A new pu lse sequence is presented that produces purely absorptive lineshapes from s uch an experiment. An important observation is that the coherence transfer goes through a maximum at moderate rf fields. (C) 1999 Elsevier Science B.V . All rights reserved.