Comparar métodos
Examine os métodos selecionados lado a lado; as linhas que diferem ficam destacadas.
| Espectroscopia ATR-FTIR× | Coerência de Quanta Único Heteronuclear (HSQC)× | |
|---|---|---|
| Área | Espectroscopia | Espectroscopia |
| Família | Process / pipeline | Process / pipeline |
| Ano de origem≠ | 1961 | 1980 |
| Autor original≠ | Joop Fahrenfort | Anil Kumar |
| Tipo≠ | Vibrational spectroscopy technique | Heteronuclear correlation sequence |
| Fonte seminal≠ | Harrick, N. J. (1960). Study of physics of internal reflection from metals. Journal of Physics and Chemistry of Solids, 13(2), 143-155. link ↗ | Bodenhausen, G., & Ruben, D. J. (1981). Natural abundance nitrogen-15 NMR by enhanced heteronuclear spectroscopy. Chemical Physics Letters, 69(2), 185-189. DOI ↗ |
| Outros nomes | ATR-IR, attenuated total reflectance, FTIR spectroscopy | HSQC NMR, 1H-13C HSQC, heteronuclear correlation |
| Relacionados≠ | 3 | 4 |
| Resumo≠ | Attenuated Total Reflectance (ATR) Fourier Transform Infrared (FTIR) spectroscopy is a variant of conventional FTIR that measures infrared absorption through evanescent-wave interrogation of samples in direct contact with a high-refractive-index crystal. Developed by Harrick and Fahrenfort in the 1960s, ATR-FTIR is now the dominant form of FTIR spectroscopy, enabling rapid, non-destructive characterization of organic compounds, polymers, coatings, and biological materials without extensive sample preparation. | 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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