η3-Benzyl-Nickel-Diimine Complex: Synthesis and Catalytic Properties in Ethylene Polymerization

✍ Scribed by Viviane Fassina; Carolina Ramminger; Marcus Seferin; Raquel S. Mauler; Roberto F. de Souza; Adriano L. Monteiro

• Book ID: 102493359
• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 73 KB
• Volume: 24
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200350009

✦ Synopsis

Abstract

The oxidative addition of benzyl chloride to Ni(cod)~2~ in the presence of 1,4‐bis(2,6‐diisopropylphenyl)acenaphthenediimine followed by chloride abstraction affords [(η^3^‐CH~2~C~6~H~5~)Ni(α‐diimine)][PF~6~] (α‐diimine = 1,4‐bis(2,6‐diisopropylphenyl)acenaphthenediimine) in 70% yield. The complex is active in ethylene polymerization in the presence of methylaluminoxane and under mild reaction conditions. The polyethylenes obtained are highly branched, have very low densities, do not show T~m~ or measurable crystallinity and have molecular weights ranging from 80 × 10^3^ to 290 × 10^3^ g · mol^−1^.

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