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High-Cluster (Cu9) Cage Silsesquioxanes: Synthesis, Structure, and Catalytic Activityстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Astakhov Grigorii S., Bilyachenko Alexey N., Korlyukov Alexander A., Levitsky Mikhail M., Shul’pina Lidia S., Bantreil Xavier, Lamaty Frédéric, Vologzhanina Anna V., Shubina Elena S., Dorovatovskii Pavel V., Nesterov Dmytro S., Pombeiro Armando J.L., Shul’pin Georgiy B.
- Журнал: Inorganic Chemistry
- Том: 57
- Номер: 18
- Год издания: 2018
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 11524
- Последняя страница: 11529
- DOI: 10.1021/acs.inorgchem.8b01496
- Аннотация: Unusual high-cluster (Cu9) cage phenylsilsesquioxanes were obtained via complexation of in situ CuII,Na-silsesquioxane species formed with phenanthroline and neocuproine. In the first case, phenanthroline, acting as “a silent ligand” (not participating in the composition of the final product), favors the formation of an unprecedented cagelike phenylsilsesquioxane of Cu9Na6 nuclearity, 1. In the second case, neocuproine ligands withdraws two Cu ions from the metallasilsesquioxane matrix, producing two cationic fragments Cu+(neocuproine)2. The remaining metallasilsesquioxane is rearranged into an anionic cage of Cu9Na4 nuclearity, finalizing the formation of a specific ionic complex, 2. The impressive molecular architecture of both types of complexes, e.g., the presence of different (cyclic/acyclic) types of silsesquioxane ligands, was established by single-crystal X-ray diffraction studies. Compound 1 was revealed to be highly active in the oxidative amidation of benzylic alcohol and the catalyst loading could be reduced down to 100 ppm of Cu. Catalytic studies of compound 1 demonstrated its high activity in hydroperoxidation of alkanes with H2O2 and oxidation of alcohols to ketones with tert-BuOOH.
- Добавил в систему: Левицкий Михаил Моисеевич
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