Aluminabenzene complex [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(2,4-dtbp)] (2,4-dtbp = 2,4-di-tert-butylpentadienyl) reacts with LiN(SiHMe2)2 according to a methyl/silylamido exchange and formation of [(1-Me-3,5-tBu2-C5H3Al){μ-N(SiHMe2)2}Ln(2,4-dtbp)] which engages in a donor(THF)-dependent reversible Ln-to-Al-pentadienyl migration. The reaction of [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(2,4-dtbp)] with [CPh3][B(C6F5)4] results in pentadienyl group abstraction affording cationic complex [(1-Me-3,5-tBu2-C5H3Al)(μ-Me)Y(benzene)][B(C6F5)4] which acts as a single-component catalyst in isoprene polymerization.
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