Recoupling of chemical-shift anisotropy powder patterns in MAS NMR

被引：15

作者：

Orr, Robin M. ^{[1
]}

Duer, Melinda J. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

来源：

JOURNAL OF MAGNETIC RESONANCE | 2006年 / 181卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

solid-state NMR; magic-angle spinning; chemical-shift anisotropy; recoupling;

D O I：

10.1016/j.jmr.2006.03.010

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A comparison of three different implementations of the chemical-shift recoupling experiment of Tycko et at. [R. Tycko, G. Dabbagh, P.A. Mirau, Determination of chemical-shift-anisotropy lineshapes in a two-dimensional magic-angle-spinning NMR experiment, J. Magn. Reson. 85 (1989) 265-274] is presented. The methods seek to reduce the effects of artefacts resulting from pulse imperfections and residual C-H dipolar coupling in organic solids. An optimised and constant time implementation are shown to give well-defined and artefact free powder pattern lineshapes in the indirectly observed dimension for both sp(2) and sp(3) carbon sites. Experimental setup is no more demanding than for the original experiment, and can be implemented using standard commercial hardware. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：1 / 8

页数：8

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