Correlation of Isotropic and Anisotropic Chemical Shifts in Solids by Two‐Dimensional Variable‐Angle‐Spinning NMR
作者:
Lucio Frydman,
Gerard C. Chingas,
Young K. Lee,
Philip J. Grandinetti,
Margaret A. Eastman,
Geoffrey A. Barrall,
Alexander Pines,
期刊:
Israel Journal of Chemistry
(WILEY Available online 1992)
卷期:
Volume 32,
issue 2‐3
页码: 161-164
ISSN:0021-2148
年代: 1992
DOI:10.1002/ijch.199200022
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractWe describe a new solid‐state nuclear magnetic resonance (NMR) technique for correlating anisotropic and isotropic chemical shifts in powdered samples. Two‐dimensional (2D) NMR spectra are obtained by processing signals acquired inindependentexperiments for different angles between the sample spinning axis and the Zeeman magnetic field. This 2D NMR approach can therefore resolve individual static anisotropic lineshapes according to their isotropic chemical shift frequencies, without use of sudden mechanical motions or multiple‐pulse irradiation schemes. Applications of the technique are illustrated with an analysis of the chemical shift anisotropy for the eight distinct13C sites in tyr
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