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Titolo:
3-DIMENSIONAL NUCLEAR-MAGNETIC-RESONANCE EXCHANGE SPECTROSCOPY WITH ROTARY RESONANCE IN ROTATING SOLIDS - APPLICATION TO TROPOLONE DYNAMICS
Autore:
GAN ZH; ERNST RR;
Indirizzi:
ETH ZURICH,PHYS CHEM LAB CH-8092 ZURICH SWITZERLAND
Titolo Testata:
The Journal of chemical physics
fascicolo: 22, volume: 108, anno: 1998,
pagine: 9444 - 9451
SICI:
0021-9606(1998)108:22<9444:3NESWR>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL-SHIFT-ANISOTROPY; ANGLE-SPINNING NMR; MAGIC-ANGLE; CROSS-POLARIZATION; STATE NMR; MOLECULAR REORIENTATIONS; SELF-DIFFUSION; RF-DRIVEN; SPECTRA; ORDER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
46
Recensione:
Indirizzi per estratti:
Citazione:
Z.H. Gan e R.R. Ernst, "3-DIMENSIONAL NUCLEAR-MAGNETIC-RESONANCE EXCHANGE SPECTROSCOPY WITH ROTARY RESONANCE IN ROTATING SOLIDS - APPLICATION TO TROPOLONE DYNAMICS", The Journal of chemical physics, 108(22), 1998, pp. 9444-9451

Abstract

A three-dimensional nuclear magnetic resonance (NMR) experiment is described for the investigation of molecular rearrangements in the course of chemical exchange processes. The experiment relies on the two-dimensional correlation of the chemical shift tensors before and after exchange. The chemical shift tensors are retrieved under fast magic angle spinning by rotary resonance induced by a radio-frequency held whosemagnitude matches the sample spinning frequency. The third dimension serves for the separation of the two-dimensional chemical shift patterns by the isotropic chemical shifts. The three-dimensional rotary-resonance C-13-exchange experiment is demonstrated with an investigation of hydrogen-transfer and molecular diffusion processes in a sample of solid tropolone. (C) 1998 American Institute of Physics.

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Documento generato il 21/09/20 alle ore 06:16:33