Bis(cyclopentadienyl)zirconium dichloride CAS: 1291-32-3 is an organozirconium compound composed of a zirconium central atom, with two cyclopentadienyl and two chloro ligands. It is a colorless diamagnetic solid that is somewhat stable in air. Bis(cyclopentadienyl)zirconium dichloride CAS: 1291-32-3 may be prepared from zirconium(IV) chloride-THF complex and sodium cyclopentadienide: ZrCl4(THF)2 + 2 NaCp → Cp2ZrCl2 + 2 NaCl + 2 THF The closely related compound Cp2ZrBr2 was first described by Birmingham and Wilkinson. The compound is a bent metallocene: the Cp rings are not parallel, the average Cp(centroid)-M-Cp angle being 128°. The Cl-Zr-Cl angle of 97.1° is wider than in niobocene dichloride (85.6°) and molybdocene dichloride (82°). This trend helped to establish the orientation of the HOMO in this class of complex. Bis(cyclopentadienyl)zirconium dichloride CAS: 1291-32-3 is raw material for Schwartz's reagent (Cp2ZrHCl ) and Negishi reagent ( Cp2Zr(η2-butene)). Bis(cyclopentadienyl)zirconium dichloride CAS: 1291-32-3 is always available from warehouse under 100Kgs. USD136/100g(FOB price) for trial order.
