Abstract
The THF-stabilized methylzirconocene salt [Cp2ZrCH3(THF)+]BPh4- (2) was treated with excess H2O in dichloromethane/THF at −78 °C to yield the trinuclear metallocene oxide cation complex [(Cp2Zr)3(μ2-OH)3(μ3-O)+]BPh4-·3THF (1+BPh4-) in 72% yield. The complex 1+BPh4- was characterized by X-ray diffraction. It exhibits a planar central Zr3O3 hexagon having the μ3-O ligand in its center. Each of the three oxygen atoms at the perimeter is protonated and in the crystal connected to a THF molecule by means of a weak hydrogen bond. The byproduct THF·BPh3 (3) was crystallized from the THF mother liquor and identified by X-ray diffraction.
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