An alkylzinc bromide and a lithium alkyldibromozincate containing tris(organosilyl)methyl groups
作者:Davood Azarifar、Martyn P. Coles、Salima M. El-Hamruni、Colin Eaborn、Peter B. Hitchcock、J.David Smith
DOI:10.1016/j.jorganchem.2004.02.018
日期:2004.5
The lithium reagent (3) reacts with a molar equivalent of anhydrous zinc bromide to give the dimeric compound (2a), in which zinc is four-coordinate. The product from a similar reaction with LiC(SiMe3)2(SiMe2NPhMe)} is the lithium zincate [Li(THF)2(μ-Br)2ZnC(SiMe3)2(SiMe2NPhMe)}] (4), in which the zinc is only three-coordinate. The crystal structures of 2a and 4 have been determined.