(C5Me5)SiMe3 as a mild and effective reagent for transfer of the C5Me5 ring: an improved route to monopentamethylcyclopentadienyl trihalides of the group 4 elements

Article abstract of DOI:10.1016/0022-328X(88)80551-5

The reaction between (C5Me5)SiMe3 and group 4 element tetrahalides MX4 (M=Ti, X=Cl, Br, I; M=Zr and Hf, X=Cl) gives the corresponding (η⁵-C5Me5)MX3 derivatives in nearly quantitative yields in a one-step procedure without the need for further purification.