Abstract
NMR spectroscopy is generally used to investigate molecules under equilibrium conditions. Despite recent technological and methodogical developments to study on-going reactions, tracing the fate of individual atoms during an irreversible chemical reaction is still a challenging and elaborate task. Reaction-interrupted excitation transfer (ExTra) NMR provides a selective tracking of resonances from atoms, which undergo chemical conversion. We show that reactions triggered either by rapid mixing or by photo-excitation can be conveniently followed at a sub-second time scale using standard NMR equipment. In ExTra NMR we use the selectively inverted magnetization of a selected atom to follow its conversion in the course of a fast chemical reaction. The chemical reaction has to be started within the relaxation period of an initial inverting 180° pulse. The presented protocol provides a generally applicable NMR method for reaction monitoring.
Originalsprache | englisch |
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Seiten (von - bis) | 12575-12578 |
Seitenumfang | 4 |
Fachzeitschrift | Chemical Communications |
Jahrgang | 55 |
Ausgabenummer | 83 |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Jan. 2019 |
ASJC Scopus subject areas
- Katalyse
- Elektronische, optische und magnetische Materialien
- Keramische und Verbundwerkstoffe
- Allgemeine Chemie
- Oberflächen, Beschichtungen und Folien
- Metalle und Legierungen
- Werkstoffchemie