Triptycene as a scaffold in metallocene catalyzed olefin polymerization

被引：0

作者：

Kulyabin, Pavel S. ^{[1
]}

Sharikov, Mikhail I. ^{[1
]}

Izmer, Vyatcheslav V. ^{[1
]}

Kononovich, Dmitry S. ^{[1
]}

Goryunov, Georgy P. ^{[1
]}

Alexeev, Nikita V. ^{[1
]}

Uborsky, Dmitry V. ^{[1
]}

Vittoria, Antonio ^{[2
]}

Antinucci, Giuseppe ^{[2
]}

Ehm, Christian ^{[2
]}

Budzelaar, Peter H. M. ^{[2
]}

Cipullo, Roberta ^{[2
]}

Busico, Vincenzo ^{[2
]}

Voskoboynikov, Alexander Z. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Chem, Moscow 119991, Russia

[2] Univ Napoli Federico II, Dipartimento Sci Chim, I-80126 Naples, Italy

来源：

DALTON TRANSACTIONS | 2024年 / 53卷 / 22期

关键词：

ZIEGLER-NATTA CATALYSTS; PROPENE POLYMERIZATION; ETHENE/1-HEXENE COPOLYMERIZATION; ZIRCONOCENE CATALYSTS; CHAIN TERMINATION; HIGH-TEMPERATURE; REGIOSELECTIVITY; LIGANDS; COMPLEXES; STEREOSPECIFICITY;

D O I：

10.1039/d4dt01170h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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. A set of metallocene catalysts bearing triptycene moieties in different positions was tested in olefin (co)polymerization. Comparison of results with QSPR predictions not parametrized for these exotic ligand variations demonstrates that trends can still be identified by extrapolation.

引用

页码：9516 / 9525

页数：10

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