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Single insertion of propene into a cationic zirconium(IV) complex: Isolation and X-ray crystal structure of [(C5Me5)Zr(CH2CHMeCH 2Ph)(CH2Ph)]-[B(CH2Ph)(C6F5)3]

1994; Elsevier BV; Volume: 479; Issue: 1-2 Linguagem: Inglês

10.1016/0022-328x(94)84118-7

1872-8561

Claudio Pellecchia, Attilio Immirzi, Adolfo Zambelli,

Coordination Chemistry and Organometallics

The reaction of propene with the half-sandwich salt complex [Cp′Zr(CH2Ph)2][B(CH2Ph)(C6F5)3] (1) (Cp′ = C5 Me5) affords cleanly the single-insertion adduct [Cp′Zr(CH2CHMeCH2Ph)(CH2Ph)][B(CH2Ph)(C6F5)3] (2). The crystal structure of 2 reveals an unusual ‘back-biting’ η6-arene coordination to the d0 metal, accounting for the unexpected stability of this compound either towards further propene insertion or towards β-hydrogen elimination.