2H double-quantum MAS NMR spectroscopy as a probe of dynamics on the microsecond timescale in solids

被引：51

作者：

Cutajar, Marica

Ashbrook, Sharon E.

Wimperis, Stephen ^{[1
]}

机构：

[1] Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Glasgow, WestCHEM, Glasgow G12 8QQ, Lanark, Scotland

[3] Univ St Andrews, Sch Chem, St Andrews KY16 9ST, Fife, Scotland

[4] Univ St Andrews, EastCHEM, St Andrews KY16 9ST, Fife, Scotland

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 423卷 / 4-6期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/j.cplett.2006.03.065

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The sidebands observed in the magic angle spinning (MAS) NMR spectrum of a spin I = 1 H-2 nucleus may be very strongly broadened if motion is present in the solid. The broadening arises from interference between the line-narrowing effects of MAS and the dynamics-driven reorientation of the H-2 quadrupole tensor. Here, we show that this motional broadening is absent or much reduced in the corresponding double-quantum MAS NMR spectrum. This observation suggests a new approach to studying dynamics in solids and examples are drawn from H-2 MAS NMR of oxalic acid dihydrate, sodium tetrathionate dihydrate, and the synthetic polymer PMMA. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：276 / 281

页数：6

共 28 条

[1] Refocussing of chemical and paramagnetic shift anisotropies in 2H NMR using the quadrupolar-echo experiment [J].