Synthesis and Characterization of [(C5Me4H)2Al]+, an Initiator for the Polymerization of Isobutene. X-ray Crystal Structures of [(C5Me4H)2Al(μ-Cl)]2 and [(C5Me4H)2Al][B(C6F5)4]

The octamethylaluminocenium cation [Cp‘2Al]+ (Cp‘ = C5Me4H) was formed both by halide abstraction in the reaction between [Cp‘2AlCl]2 and AlCl3 and by cyclopentadienide abstraction in the reaction between Cp‘3Al and [CPh3][B(C6F5)]4. [Cp‘2Al]+ is less thermally stable than [Cp*2Al]+ (Cp* = C5Me5) bu...

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Bibliographic Details
Published in:Organometallics 2006-11, Vol.25 (23), p.5582-5586
Main Authors: Lee, Suh-Jane, Shapiro, Pamela J, Twamley, Brendan
Format: Article
Language:English
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Summary:The octamethylaluminocenium cation [Cp‘2Al]+ (Cp‘ = C5Me4H) was formed both by halide abstraction in the reaction between [Cp‘2AlCl]2 and AlCl3 and by cyclopentadienide abstraction in the reaction between Cp‘3Al and [CPh3][B(C6F5)]4. [Cp‘2Al]+ is less thermally stable than [Cp*2Al]+ (Cp* = C5Me5) but is more active as an initiator for isobutene polymerization. The X-ray crystal structures of [Cp‘2AlCl]2 and [Cp‘2Al][B(C6F5)4] are reported.
ISSN:0276-7333
1520-6041
DOI:10.1021/om0606439