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Synthesis of Aluminum Complexes Based on 2,6‐Bis(2‐hydroxyphenyl)Pyridines: Efficient Initiators for Ring‐Opening Polymerization of Cyclic Estersстатья Исследовательская статья Электронная публикация
- Авторы: Serova Valeriia A., Lykov Artem V., Mankaev Badma N., Agaeva Milana U., Lyssenko Konstantin A., Chernikova Elena V., Zabalov Maxim V., Egorov Mikhail P., Karlov Sergey S.
- Журнал: ChemistrySelect
- Том: 9
- Номер: 45
- Год издания: 2024
- DOI: 10.1002/slct.202404218
- Аннотация: The search for new initiators based on nontoxic metal complexes, allowing for the controlled production of polycaprolactone (PCL) and polylactide (PLA) is an actual task. In the present work, we report the synthesis of aluminum complexes 6a and 6b based on substituted 2,6-bis(2-hydroxyphenyl)pyridine proligands. The compositions and structures of the novel compounds were established by elemental analysis and 1H, 13C, NMR spectroscopy in the solid state by X-ray diffraction analysis (6a and 6b). All the synthesized aluminum complexes are monomeric. Complexes 6a and 6b (in presence of benzyl alcohol (BnOH)) turned out to be active in the ring opening polymerization (ROP) of ε-caprolactone (ε-CL), L-, rac-lactide (L-, rac-LA) gave PCL and PLA with high molecular weights. The mechanism of the polymerization reaction for compounds С, 6a, and6b was also investigated using the density functional theory (DFT) method. The substituent effect analyzed in terms of percent buried volume and non-covalent interactions. The values ofcalculated Gibbs free activation energies correspond to the trend found experimentally.
- Добавил в систему: Серова Валерия Андреевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | ChemistrySelect_-_2024_-_Serova_-_Synthesis_of_Aluminum_Com… | 1,4 МБ | 16 декабря 2024 [ValeriiaSerova] | |
| 2. | Экспертное заключение | ЭЗ1.pdf | 1,3 МБ | 17 февраля 2025 [mankaev92] |