Alkene polymerization by a cationic zirconium diamide complex formed by ligand cyclometallation
- 1 January 1996
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 11,p. 1375-1376
- https://doi.org/10.1039/cc9960001375
Abstract
Reaction of {(Me3Si)2N}2Zr(CH2Ph)2 1 with B(C6F5)3 gives a cationic benzyl complex, which at –25 °C, expels toluene to afford {(Me3Si)2N}[graphic omitted]SiMe3){ηn-PhCH2-B(C6F5)3}2; strong anion coordination to zirconium in cyclometallation product 2 suppresses alkene polymerization, whereas the analogous cationic NMe2Ph adduct 3, formed by protonolysis of 1, polymerizes both ethene and propene.Keywords
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