摘要:
Substitution of the chloride in Cp*FvTiCl with MR (Fv = C5Me4CH2; R = Me, CH2SiMe3, CH2CMe3, CH = CH2, M = Li; R = CH2Ph, M = K; R = C3H5, M = MgCl; R = Ph, M = Na . NaCl) gives Cp*FvTiR. NMR spectroscopic evidence points towards a series of structurally related compounds with a bent-sandwich geometry. The substituent R is positioned in the wedge, midway below the exocyclic methylene group and a neighbouring methyl group of the fulvene. Thermolysis of Cp*FvTiR gives, dependent on the substituent R, reduction to Cp*FvTi (R = CH2Ph) or the double ring metallated Cp*[C5Me3(CH2)(2)]Ti (R = CH2XMe3, X = C, Si) or Cp*FvTiCH=CHMe (R = eta(3)-C3H5).