Intramolecular coordination of an alkene to a mixed dicyclopentadienyl benzyl zirconium cation studied by NMR spectroscopy

Abstract

Benzylation of [Zr(η⁵-C₅H₅){η⁵-C₅H₄SiMe₂(CH₂CHCH₂)}Cl₂] 1 yields [Zr(η⁵-C₅H₅){η⁵-C₅H₄SiMe₂- (CH₂CHCH₂)}(CH₂C₆H₅)₂] 2, which reacts with either B(C₆F₅)₃ or [Ph₃C][B(C₆F₅)₄] to generate the same cation, 3⁺, which has been fully characterised by ¹H, ¹³C NMR and ¹H DNMR spectroscopy.