text: The organometallic chemistry of titanium typically starts from . An important reaction involves sodium cyclopentadienyl to give titanocene dichloride, . This compound and many of its derivatives are precursors to Ziegler–Natta catalysts. Tebbe's reagent, useful in organic chemistry, is an aluminium-containing derivative of titanocene that arises from the reaction of titanocene dichloride with trimethylaluminium. It is used for the "olefination" reactions.
  Arenes, such as  react to give the piano-stool complexes  (R = H, ; see figure above). This reaction illustrates the high Lewis acidity of the  entity, which is generated by abstraction of chloride from  by aluminium trichloride|.