Long-range1H coupling interactions: Identification of different pathways by 2D NMR δ—δ correlated spectroscopy. Applications in structural analysis
| Autor: | Nicole Goasdoué, D. Davoust, Nicole Platzer |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
chemistry.chemical_classification
Analytical chemistry Trimer General Chemistry Nuclear magnetic resonance spectroscopy Carotol chemistry.chemical_compound Polycyclic compound chemistry Computational chemistry Single bond General Materials Science Spectroscopy Two-dimensional nuclear magnetic resonance spectroscopy Isophorone |
| Zdroj: | Magnetic Resonance in Chemistry. 25:311-319 |
| ISSN: | 1097-458X 0749-1581 |
| DOI: | 10.1002/mrc.1260250408 |
| Popis: | The simplest methods of 2D δ-δ correlated spectroscopy (COSY and COSY LR) allow the easy observation of long-range coupling interactions. It is shown how these methods can lead to the discrimination between different pathways across single bonds: 4J through coplanar or gauche arrangement of the bonds and 5J through a zig-zag pathway or bond proximity. Applications to configurational and conformational analysis of polycyclic compounds, a trimer of isophorone, two natural terpenoids (carotol and daucol) and four steroids, are presented. |
| Databáze: | OpenAIRE |
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