Preparation of Dimeric [(j/5-/Bu3Cp)CoBr]2 and Convenient Synthesis of the Homodinuclear Cobalt Complex [(75-rBu3Cp)Co]2H3 therefrom
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چکیده
The title compound [(?75-rBu3Cp)CoBr]2 1 is prepared in a one pot reaction starting from 1,2,4fBu3-cyclopentadiene followed by metallation and by reaction of the resulting ?Bu3Cp“K+ anion salt with anhydrous CoBr2 in THF. 1 was isolated from this reaction in 78% yield as black crystals. 1 reacts with LiAlH4 in THF at 0 °C. Subsequent alcoholysis of the crude reaction mixture with ethanol at -78 °C gives the novel trihydride clus ter [(?75-rBu3Cp)Co]2H3 2 in 58% isolated yield as black crystals. 2 has been characterized by !H NMR, ESR, MS, and IR spectroscopy, as well as by elemental analysis.
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تاریخ انتشار 2013