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Synthesis, structure, and catalytic activity of new aluminum and titanium complexes based on aminobisphenolate ligands containing bulky substituentsстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 августа 2017 г.
- Авторы: Kuchuk E.A., Zaitsev K.V., Mamedova F.A., Churakov A.V., Zaitseva G.S., Lemenovsky D.A., Karlov S.S.
- Журнал: Russian Chemical Bulletin
- Том: 65
- Номер: 7
- Год издания: 2016
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 1743
- Последняя страница: 1749
- DOI: 10.1007/s11172-016-1505-x
- Аннотация: A reaction of aminobisphenols EtN{CH2[(4-Alk)(6-But)(2-HO)C6H2]}2, Alk = Me (1); But (2) containing alkyl substituents in the phenol groups with trimethylaluminum and tetra(tert-butoxy)titanium gave two new aluminum derivatives with the Me–Al bond: EtN{CH2[(2-Alk)-(4-But)C6H2(2-O–)]}2Al–Me, Alk = Me (3); But (4), and two new titanium derivatives with the ButO–Ti bond: EtN{CH2[(2-Alk)(4-But)C6H2(2-O–)]}2Ti(O–But)2, Alk = Me (5); But (6). The structures of new compounds were confirmed by NMR spectroscopy and elemental analysis. The structures of complexes 3 and 6 were studied by X-ray crystallography. Complexes 3 and 6 are monomeric in the solid phase: a coordination number of Al atom is 4, that of Ti atom is 5, in addition to the M–O bonds the M←N interactions are also present. Complexes 3–6 were studied as initiators of the ring-opening polymerization of ε-caprolactone. The resulting polymers are characterized by relatively high values of number average molecular weight, with the polydispersity being relatively low.
- Добавил в систему: Зайцев Кирилл Владимирович