Synthesis and spectroscopic characterization of a series of substituted cyclopentadienyl Group 4 fluorides; crystal structure of the acetylacetonato complex [(acac)2(η-C5Me5)Zr(µ-F)SnMe3Cl]

Abstract

A series of mono- and di-substituted cyclopentadienyl Group 4 fluorides [Ti{η-C₅H₃R(R′)-1,3}_nF_m], (n=m= 2 and n= 1, m= 3; R = H or SiMe₃; R′= H, Me or SiMe₃), [Ti(η-C₅Me₅)₂F₂] and [Zr(η-C₅H₅)₂F₂] have been prepared via the reaction of the corresponding chlorides with SnMe₃F. The compounds have been characterized by means of ¹H and ¹⁹F NMR, IR and mass spectroscopy and chemical analyses. The solvent dependence of the reactions using SnMe₃F is discussed. To demonstrate the wide applicability of this fluorinating system the acetylacetonatofluoro complex [(acac)₂(η-C₅Me₅)Zr(µ-F)SnMe₃Cl] has been prepared and its crystal structure determined.