Metallocene derivatives of early transition metals. Part 2. Substituted cyclopentadienyl Group 4A dichloro-metallocene complexes [M(η-C<sub>5</sub>H<sub>4</sub>R)<sub>2</sub>Cl<sub>2</sub>](M = Zr or Hf; R = Me, Et, Pr<sup>i</sup>, Bu<sup>t</sup>, or SiMe<sub>3</sub>), their mono- and di-alkyl derivatives [M(η-C<sub>5</sub>H<sub>4</sub>R)<sub>2</sub>R′X](X = Cl or R′; R′= CH<sub>2</sub>SiMe<sub>3</sub>or CH<sub>2</sub>CMe<sub>3</sub>), and their d<sup>1</sup>reduction products
作者:Michael F. Lappert、Christopher J. Pickett、Paul I. Riley、Paul I. W. Yarrow