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Titolo:
A novel dipolar dephasing method for the slow magic angle turning experiment
Autore:
Hu, JZ; Taylor, CMV; Pugmire, RJ; Grant, DM;
Indirizzi:
Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA Univ Utah Salt Lake City UT USA 84112 Chem, Salt Lake City, UT 84112 USA Univ Utah, Dept Chem & Fuels Engn, Salt Lake City, UT 84112 USA Univ UtahSalt Lake City UT USA 84112 Engn, Salt Lake City, UT 84112 USA Los Alamos Natl Lab, Los Alamos, NM 87545 USA Los Alamos Natl Lab Los Alamos NM USA 87545 Lab, Los Alamos, NM 87545 USA
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE
fascicolo: 1, volume: 152, anno: 2001,
pagine: 7 - 13
SICI:
1090-7807(200109)152:1<7:ANDDMF>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
TENSOR PRINCIPAL VALUES; SOLID-STATE NMR; SPINNING NMR; RESOLUTION; SPECTRA;
Keywords:
dipolar dephasing in slow MAT experiments; chemical shift tensor; FIREMAT and 2D-PASS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Hu, JZ Battelle Mem Inst, Pacific NW Natl Labs, POB 999,MS K8-98, Richland, WA 99352 USA Battelle Mem Inst POB 999,MS K8-98 Richland WA USA 99352 99352 USA
Citazione:
J.Z. Hu et al., "A novel dipolar dephasing method for the slow magic angle turning experiment", J MAGN RES, 152(1), 2001, pp. 7-13

Abstract

Complete suppression of the resonances from protonated carbons in a slow magic angle spinning experiment can be achieved using five dipolar dephasing(Five-DD) periods distributed in one rotor period. This produces a spectrum containing only the spinning sidebands (SSB) from the nonprotonated carbons. It is shown that the SSB patterns corresponding to the nonprotonated carbons are not distorted over a wide range of dipolar dephasing times. Hence, this method can be used to obtain reliable principal values of the chemical shift tensors for each nonprotonated carbon. The Five-DD method can be readily incorporated into isotropic-anisotropic 2D experiments such as FIREMAT and 2D-PASS to facilitate the measurement of the C-13 chemical shift tensors in complex systems. (C) 2001 Academic Press.

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Documento generato il 28/09/20 alle ore 15:06:32