HETLOC, an Efficient Method for Determining Heteronuclear Long‐Range Couplings with Heteronuclei in Natural Abundance
- 1 October 1991
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 30 (10) , 1329-1331
- https://doi.org/10.1002/anie.199113291
Abstract
Exceptionally high accuracy and detection limits characterize the NMR experiment, a variant of TOSCY (TOSCY = Total Correlation Spectroscopy), described here for the determination of heteronuclear 3J couplings. No enrichment of the heteroatom is necessary. The process, which also yields coupling constants smaller than the signal width, is only applicable to proton‐bearing heteroatoms. In addition, the protons linked by TOSCY transfer should belong to the same spin system. Application in the determination of the angle ϕ in peptides demonstrates the performance of the process.Keywords
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