Cationic Zirconocene Hydrides:  A New Type of Highly Effective Initiators for Carbocationic Polymerizations

Cationic Zirconocene Hydrides:  A New Type of Highly Effective Initiators for Carbocationic Polymerizations

The reaction of [CPh3][B(C6F4R)4] with [Cp‘2ZrH2]2 (Cp‘ = C5H4SiMe3) gives the new binuclear hydrido complexes [Cp‘4Zr2H3][B(C6F4R)4] (R = F, SiPri 3), which are highly active initiators for the polymerization of isobutene and isobutene−isoprene copolymerizations at near-zero concentrations of ioniz...

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Veröffentlicht in:Organometallics 1999-08, Vol.18 (16), p.2933-2935
Hauptverfasser: Carr, Andrew G, Dawson, David M, Thornton-Pett, Mark, Bochmann, Manfred
Format: Artikel
Sprache:eng
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Zusammenfassung:The reaction of [CPh3][B(C6F4R)4] with [Cp‘2ZrH2]2 (Cp‘ = C5H4SiMe3) gives the new binuclear hydrido complexes [Cp‘4Zr2H3][B(C6F4R)4] (R = F, SiPri 3), which are highly active initiators for the polymerization of isobutene and isobutene−isoprene copolymerizations at near-zero concentrations of ionizing solvents. The structure of the trinuclear hydride [Cp‘5(η1:η5-C5H3SiMe3)Zr3H4]+[B(C6F4SiPri 3)4]- is reported.
ISSN:0276-7333
1520-6041
DOI:10.1021/om990304y