Trimethylaluminum reacts with [CPh3][B(C6F5)4] at elevated temperatures to give a
mixture of AlMe3-x(C6F5)x compounds, depending on the Al/B ratio. AlBui
3 reacts significantly
faster under β-hydride abstraction. The Al−C6F5 species rapidly react with Cp2ZrMe2 or
[Cp2ZrMe]+ under C6F5 transfer to give poorly active Cp2ZrMe(C6F5); this reaction may have
implications for the deactivation of Cp2ZrMe2/AlR3/[CPh3][B(C6F5)4] olefin polymerization
catalysts.
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