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| HSQC× | FT-ICR-masspektrometri× | NOESY× | |
|---|---|---|---|
| Ämnesområde | Spektroskopi | Spektroskopi | Spektroskopi |
| Familj | Process / pipeline | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1980 | 1974 | 1981 |
| Upphovsperson≠ | Anil Kumar | Alan Marshall | Richard Ernst |
| Typ≠ | Heteronuclear correlation sequence | Mass spectrometry technique | Two-dimensional pulse sequence |
| Ursprungskälla≠ | Bodenhausen, G., & Ruben, D. J. (1981). Natural abundance nitrogen-15 NMR by enhanced heteronuclear spectroscopy. Chemical Physics Letters, 69(2), 185-189. DOI ↗ | Comisarow, M. B., & Marshall, A. G. (1974). Fourier transform ion cyclotron resonance spectroscopy. Chemical Physics Letters, 25(2), 282-283. DOI ↗ | 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 ↗ |
| Alias | HSQC NMR, 1H-13C HSQC, heteronuclear correlation | FT-ICR-MS, Fourier Transform ICR, ICR mass spectrometry | NOE spectroscopy, 2D NOESY, NOE NMR |
| Närliggande≠ | 4 | 4 | 3 |
| Sammanfattning≠ | 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. | Fourier Transform Ion Cyclotron Resonance (FT-ICR) mass spectrometry is an advanced analytical technique that combines magnetic confinement of ions with Fourier transform data processing to achieve exceptional mass accuracy and resolution. Developed by Comisarow and Marshall in 1974, FT-ICR-MS enables the determination of exact masses and elemental compositions of complex molecules, making it invaluable for environmental chemistry, metabolomics, petroleum characterization, and structural elucidation of unknowns. | 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. |
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