Spinning sidebands (SSBs) in the MAS NMR spectrum of a polycrystalline solid are related to the principal values of the chemical shift or quadrupole coupling tensors. At present, 2D methods are widely used to sort out the SSBs for each isotropic peak. Here a simple and efficient method for separatin
Spinning Sidebands in the Fast-MAS Multiple-Quantum Spectra of Protons in Solids
β Scribed by H. Geen; J.J. Titman; J. Gottwald; H.W. Spiess
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 299 KB
- Volume
- 114
- Category
- Article
- ISSN
- 1064-1858
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A new approach for high-resolution solid-state heteronuclear multiple-quantum MAS NMR spectroscopy of dipolar-coupled spin-1 2 nuclei is introduced. The method is a heteronuclear chemical shift correlation technique of abundant spins, like 1 H with rare spins, like 13 C in natural abundance. High re
## Abstract ^1^H NMR spectra of the methyl group in an oriented crystal sample of methylmalonic acid with all three nonβmethyl protons replaced by deuterons are interpreted in terms of the damped quantum rotation (DQR) theory of NMR line shapes. The DQR approach offers a perfect theoretical reprodu
The distributions of both the quadrupolar and the isotopic chemical shift interactions are shown to give multiple-quantum MAS spectra that remain tilted after shearing. For both types of distribution, the theoretical slopes, formed by the resulting distribution of the centers of gravity of the signa