Structure and Intramolecular Mobility of Some Derivatives of Bis(thio)phosphorylated Amides in CD<sub>2</sub>Cl<sub>2</sub> and CD<sub>3</sub>CN Solutions
The structure and intramolecular mobility of some derivatives of bis(thio)phosphorylated amides in CCl4, CD2Cl2, and CD3CN solutions were examined by 1H and 31P NMR spectroscopy. A comparative analysis of the temperature-dependent 1H and 31P NMR spectra of the studied compounds with symmetric and as...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Kazan Federal University
2023-12-01
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| Series: | Učënye Zapiski Kazanskogo Universiteta. Seriâ Estestvennye Nauki |
| Subjects: | |
| Online Access: | https://uzakuesc.elpub.ru/jour/article/view/32 |
| Summary: | The structure and intramolecular mobility of some derivatives of bis(thio)phosphorylated amides in CCl4, CD2Cl2, and CD3CN solutions were examined by 1H and 31P NMR spectroscopy. A comparative analysis of the temperature-dependent 1H and 31P NMR spectra of the studied compounds with symmetric and asymmetric substitution at phosphorus atoms was carried out. Various intramolecular processes were identified – rotation around C-N bonds, conformational transformations of molecules, tautomerism, and phosphorylotropic rearrangement with the formation of various conformational forms. It was shown that a dynamic equilibrium of several forms is reached, with the amide (phosphazo-) form having a clear advantage. |
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| ISSN: | 2542-064X 2500-218X |