New Group IV Metallocene Systems Active in the Copolymerization of α‐Olefins and Conjugated Dienes
Abstract
Summary: Rac‐[CH 2(2,4‐di‐tert‐butyl‐cyclopentadienyl)2]ZrCl 2 (1), rac‐[CH 2(3‐tert‐butyl‐4,5,6,7‐tetrahydroindenyl)2]ZrCl 2 (2), rac‐[CH 2(3‐isopropyl‐4,5,6,7‐tetrahydroindenyl)2]ZrCl 2 (3), and rac‐[CH 2(3‐methyl‐4,5,6,7‐tetrahydroindenyl)2]ZrCl 2 (4) were synthesized and characterized by 1 H NMR analysis. These C 2 symmetric ansa‐zirconocenes, activated with methylaluminoxane (MAO), were able to promote copolymerization of ethene and 1,3‐butadiene. The structures of the copolymers are strongly influenced by zirconocene utilized as catalytic precursor. Depending on the reaction conditions polyethenes containing cyclopropane and cyclopentane rings, or 1,1‐ 1,3‐butadiene inserted constitutional units, were obtained. Structures of the synthesized catalytic precursors. magnified imageStructures of the synthesized catalytic precursors.
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- Authors
- Napoli, M., Pragliola, S., Costabile, C., & Longo, P.
- Affiliations
- University of Salerno (IT)
- Corresponding author
- Longo, Pasquale
- Venue
- Macromolecular Chemistry and Physics
- Publisher
- Wiley
- Published
- 2006-01-19
- Volume
- 207
- Issue
- 3
- Pages
- 304-309
- ISSN
- 1022-1352 (ISSN-L)
- 1521-3935
- OpenAlex
- W2033002287
- Cited by
- 16
- References
- 17
- Citations by year
- 2024: 3 · 2023: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 2 · 2014: 1
- FWCI
- 1.20
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Macromolecular Chemistry and Physics (publishedVersion)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Organometallic Complex Synthesis and Catalysis
- Physical Sciences › Chemistry › Organic Chemistry › Advanced Polymer Synthesis and Characterization
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Keywords
- ansa-zirconocene, zirconium catalysts, conjugated dienes, methylaluminoxane activation, cyclopropane ring, cyclopentane ring, copolymer structure
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