Triptycene as a Scaffold in Metallocene Catalyzed Olefin Polymerization

Авторы: Kulyabin Pavel S., Sharikov Mikhail I., Izmer Vyatcheslav V., Kononovich Dmitry S., Goryunov Georgy P., Alexeev Nikita V., Uborsky Dmitry V., Vittoria Antonio, Antinucci Giuseppe, Ehm Christian, Budzelaar Petrus Henricus Maria, Cipullo Roberta, Busico Vincenzo, Voskoboynikov Alexander Z.
Журнал: Dalton Transactions
Год издания: 2024
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
DOI: 10.1039/d4dt01170h
Аннотация: A set of metallocene olefin polymerization catalysts bearing triptycene moieties in either position 4-5 (complexes Ty1-Ty5) or in position 5-6 (complexes Ty6-Ty8) of the basic dimethylsilyl-bridged bis(indenyl) system has been tested in propene polymerization and in ethene/1-hexene copolymerization. Comparison of the results with QSPR (quantitative structure-property relationship) predictions not parametrized for these exotic ligand variations demonstrates that trends can still be identified by extrapolation. Interestingly, Ty7, upon suitable activation, provides a highly isotactic polypropylene with an exceptional amount of 2,1 regio-errors (8%). The previously developed QSPR type models successfully predicted the low regioselectivity of this catalyst, despite the fact that the catalyst structure differs significantly from the benchmark set.
Добавил в систему: Уборский Дмитрий Вадимович

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