The present invention relates to ligands and the synthesis of those
ligands for use in metallocene complexes. More particularly, the present
invention relates to the synthesis of diarylsilyl bridged
biscyclopentadienes using diarylsilyldisulfonates. Even more
particularly, the present invention describes Group IV metallocenes
containing diarylsilyl bridged bis-cyclopentadienyl ligands prepared from
contacting a diarylsilyldisulfonate with an organometallic indenyl
reagent.