High-order selective sequences in multiple-quantum NMR
β Scribed by W.S Warren; D.P Weitekamp; A Pines
- Publisher
- Elsevier Science
- Year
- 1980
- Weight
- 229 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0022-2364
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π SIMILAR VOLUMES
Violations of coherence transfer selection rules in multiple quantum NMR spectra of isotropic solutions are reported. In some cases these wolations can be accounted for by strong coupling effects, as demonstrated via computer simulations. In many cases, however, the "forbidden" peaks likely arise du
The principles of molecular geometry determination by highquantum heteronuclear local field spectroscopy in solid-state NMR are discussed. The extreme multiple-quantum coherences in a cluster of nuclear spins are allowed to evolve in the presence of heteronuclear through-space couplings to two spins
## Abstract Recently, a sequence for heteronuclear dipolar decoupling in solidβstate NMR, namely SW~__f__~βTPPM, was introduced by us. Under magicβangle spinning (MAS), the decoupling efficiency of the sequence was unaffected over a range of values for various experimental parameters such as the pu