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13C shielding scale for MAS NMR spectroscopy

✍ Scribed by Karol Jackowski; Włodzimierz Makulski

Book ID
102526033
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
90 KB
Volume
49
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

We have performed the direct measurements of ^13^C magnetic shielding for pure liquid TMS, solution of 1% TMS in CDCl~3~ and solid fullerene. The measurements were carried out in spherical ampoules exploring the relation between the resonance frequencies, shielding constants and magnetic moments of ^13^C and ^3^He nuclei. Next the ^13^C 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 ^13^C shielding scale in the magic angle spinning NMR experiments. Copyright © 2011 John Wiley & Sons, Ltd.

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