Inorganic Chemistry, Vol.43, No.25, 8158-8161, 2004
Preparation of 1-p-halophenyl and 1-p-biphenylyl substituted monocarbadodecaborate anions [closo-1-Ar-CB11H11](-) by insertion of arylhalocarbenes into [nido-B11H14](-)
In the presence of a strong base, benzal chloride (C6H5CHCl2) and its p-substituted derivatives react with [nido-B11H14](-) to yield [closo-1-p-X-C6H4-CB11H11]- (X = H, F, Cl, Br, l, Ph), presumably by insertion of an arylhalocarbene and oxidation. On a 1-g scale, the yields are 30-40%, except in the case of p-iodobenzal chloride, which yields only 12% of the insertion product.