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research article

Improvements in Resolution of 1H NMR of Solids

de Almeida, Bruno Simoes  
•
Emsley, Lyndon  
April 1, 2023
Chimia

Magic angle spinning (MAS) in 1H NMR has allowed progress from featureless spectra in static samples to linewidths of a few hundreds of Hertz for powdered solids at the fastest spinning rates available today (100-150 kHz). While this is a remarkable improvement, this level of resolution is still limiting to the widespread use of 1H NMR for complex systems. This short review will discuss two recent alternative strategies that have significantly improved 1H resolution, when combined with fast MAS. The first is based on anti-z-COSY, a 2D experiment originally used for J decoupling in liquids, which removes residual broadening due to splittings caused by imperfect coherent averaging of MAS. The second strategy is to obtain pure isotropic proton (PIP) spectra in solids, by parametrically mapping any residual broadening due to imperfect averaging into a second dimension of a multidimensional correlation spectrum.

  • Details
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Type
research article
DOI
10.2533/chimia.2023.212
Web of Science ID

WOS:000982266400006

Author(s)
de Almeida, Bruno Simoes  
Emsley, Lyndon  
Date Issued

2023-04-01

Publisher

SWISS CHEMICAL SOC

Published in
Chimia
Volume

77

Issue

4

Start page

212

End page

216

Subjects

Chemistry, Multidisciplinary

•

Chemistry

•

magic angle spinning anti-z cosy

•

pip

•

solid-state nmr

•

chemical-shift correlation

•

state nmr

•

phase

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LRM  
Available on Infoscience
June 19, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/198291
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