Synthesis and Structural Characterization of New Zirconium(IV) Bent Metallocenes comprising η⁸‐Cyclooctatetraenyl and Bulky Cyclopentadienyl Ligands

Abstract

The new zirconium bent metallocenes (COT)Zr(Cp tBu2 )Cl (1) and (COT)Zr(CpЈЈ)Cl (2) were synthesized in a straightforward manner and in high yields (1: 91%, 2: 86 %) by treatment of in situprepared (COT)ZrCl 2 (THF) with 1 equiv. of K(Cp tBu2 ) or K(CpЈЈ), respectively (COT = η 8 -cyclooctatetraenyl; Cp tBu2 = η 5 -1,3-di-tert-