Synthesis, Structure, and Olefin Polymerization Catalytic Behavior of Aryl-Substituted Zirconocene Dichlorides

Autor:	Louise M. Liable-Sands, Frank R. Fronczek, Matthew P. Thornberry, Paul A. Deck, Arnold L. Rheingold and, and Nathan T. Reynolds
Rok vydání:	2004
Předmět:	Inorganic Chemistry chemistry.chemical_compound chemistry Comonomer Aryl Organic Chemistry Polymer chemistry Copolymer Olefin polymerization Crystal structure Physical and Theoretical Chemistry Toluene Catalysis
Zdroj:	Organometallics. 23:1333-1339
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om034280d
Popis:	Standard ligand-substitution reactions afforded moderate yields of (PhC5H4)2ZrCl2 (1), (1,3-Ph2C5H3)CpZrCl2 (2), [1,3,-(C6F5)2C5H3]CpZrCl2 (5), and [1,2,4-(C6F5)2C5H3]CpZrCl2 (6). Crystal structures of 1, 2, 6, and [(C6F5)C5H4]2HfMe2 (7) were obtained. Physicochemical studies (CV, IR) show that C6F5 groups are strongly electron-withdrawing compared to phenyl groups. In ethylene-1-hexene copolymerization reactions using 1, 2, (C6F5C5H4)CpZrCl2 (3), (C6F5C5H4)2ZrCl2 (4), and 5 (toluene solution, methylalumoxane cocatalyst), C6F5 substituents decrease catalytic activity but increase comonomer incorporation compared to phenyl substituents.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::94561fcc1a4a6aad3298491ad1249352 https://doi.org/10.1021/om034280d Zobrazit plný text záznamu