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| NOESY× | HSQC× | |
|---|---|---|
| Ämnesområde | Spektroskopi | Spektroskopi |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1981 | 1980 |
| Upphovsperson≠ | Richard Ernst | Anil Kumar |
| Typ≠ | Two-dimensional pulse sequence | Heteronuclear correlation sequence |
| Ursprungskälla≠ | Aue, W. P., Bartholdi, E., & Ernst, R. R. (1976). Two-dimensional spectroscopy. Application to nuclear magnetic resonance. The Journal of Chemical Physics, 64(5), 2229-2246. DOI ↗ | Bodenhausen, G., & Ruben, D. J. (1981). Natural abundance nitrogen-15 NMR by enhanced heteronuclear spectroscopy. Chemical Physics Letters, 69(2), 185-189. DOI ↗ |
| Alias | NOE spectroscopy, 2D NOESY, NOE NMR | HSQC NMR, 1H-13C HSQC, heteronuclear correlation |
| Närliggande≠ | 3 | 4 |
| Sammanfattning≠ | Nuclear Overhauser Enhancement Spectroscopy (NOESY) is a 2D NMR technique that detects through-space dipolar coupling between protons, rather than through-bond scalar coupling. Introduced by Macura and Ernst in 1981, NOESY reveals which protons are spatially close in the three-dimensional structure, independent of bonding connectivity. This makes NOESY invaluable for determining molecular conformation, assigning stereochemistry, and elucidating protein folds. | Heteronuclear Single-Quantum Coherence (HSQC) is a 2D NMR technique that correlates proton and carbon-13 (or other heteronuclei) chemical shifts through one-bond coupling constants (1JHX). Developed in the early 1980s, HSQC rapidly became the workhorse of structural chemistry because it directly maps which carbons bear which protons, providing a comprehensive view of carbon skeleton connectivity and substitution patterns. |
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