Fluorene → HCID 178435159, compound

Participants

Reaction Steps

About 2.4 mmol of fluorene was dissolved in 50 ml of diethylether and mixed with 1.5 ml of a 1.6M hexane solution of butyllithium and stirred for 2 hrs at room temperature. Then 0.77 g of bis(methylcyclopentadienyl) zirconium dichloride was added. The reaction mixture was then stirred for an addition 90 mins. Then the solvent was removed using a vacuum. The residue was extracted with toluene and a suspension filtered over sodium sulfate. The filtrate was freed from solvent and taken up in 50 ml of diethylether. Crystallization at -30° C. yields the product bis(methylcyclopentadienyl) (fluorenyl) zirconium chloride, referred to hereinafter as Catalyst No. 79. The x-ray analysis of the solid Catalyst No. 79 is believed to demonstrate that the fluorenyl is a σ-bound ligand rather than a π-bound ligand.

Provenance & Evidence