13C shielding scale for MAS NMR spectroscopy

被引：11

作者：

Jackowski, Karol ^{[1
]}

Makulski, Wlodzimierz ^{[1
]}

机构：

[1] Warsaw Univ, Lab NMR Spect, Fac Chem, PL-02093 Warsaw, Poland

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 2011年 / 49卷 / 09期

关键词：

shielding measurements; MAS NMR experiments; C-13 shielding scale; CHEMICAL-SHIFTS; CONVENTIONS; H-1;

D O I：

10.1002/mrc.2791

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have performed the direct measurements of C-13 magnetic shielding for pure liquid TMS, solution of 1% TMS in CDCl3 and solid fullerene. The measurements were carried out in spherical ampoules exploring the relation between the resonance frequencies, shielding constants and magnetic moments of C-13 and He-3 nuclei. Next the C-13 shielding constants of glycine, hexamethylbenzene and adamantane were established on the basis of appropriate chemical shifts measured in the solid state. All the new results are free from susceptibility effects and can be recommended as the reference standards of C-13 shielding scale in the magic angle spinning NMR experiments. Copyright (C) 2011 John Wiley & Sons, Ltd.

引用

页码：600 / 602

页数：3

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