High-Resolution NMR of Quadrupolar Nuclei Using Mixed Multiple-Quantum Coherences
β Scribed by Alexej Jerschow; John W. Logan; Alexander Pines
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 73 KB
- Volume
- 149
- Category
- Article
- ISSN
- 1090-7807
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β¦ Synopsis
A multiple-quantum magic angle spinning (MQMAS) NMR experiment of quadrupolar nuclei is demonstrated, which uses two different multiple quantum coherences in t(1) to refocus the quadrupolar broadening. This experiment has the potential of achieving improved resolution over current techniques.
π SIMILAR VOLUMES
## Heteronuclear correlation (HETCOR) NMR spectroscopy To achieve high resolution for quadrupolar nuclei in a has been used in both liquid and solid states to provide HETCOR experiment, it is necessary to construct an isoinformation on the proximity of different nuclei in a complex tropic t 1 dime
Relaxation resulting from the modulation of dipolar interaction the quadrupolar interaction. It has been shown that, for 2 H is commonly used for estimating distances in molecules in soluand 23 Na in single crystalline solids, the transitions 0m } tions. However, for most nuclei with spin I ΓΊ 1 2 th
## Cross-polarization from 1 H to the multiple-quantum coherences of a quadrupolar nucleus is used in combination with the twodimensional multiple-quantum magic angle spinning (MQMAS) NMR experiment in order to extract high-resolution CPMAS NMR spectra. The technique is demonstrated on 23 Na (S β«Ψ