Inorganic Chemistry, Vol.40, No.26, 6555-6562, 2001
Are halocarboranes suitable for substitution reactions? The case for 3-I-1,2-closo-C2B10H11: Molecular orbital calculations, aryldehalogenation reactions, B-11 NMR interpretation of closo-carboranes, and molecular structures of 1-Ph-3-Br-1,2-closo-C2B10H10 and 3-Ph-1,2-closo-C2B10H11
In this paper, the chemistry of 3-X-1,2-closo-C2B10H11 (X = halogen) derivatives is extended. Molecular orbital and B-11 and C-13 NMR calculations on these species are presented. A qualitative interpretation of the B-11 NMR spectra of closo o-carborane derivatives is also provided. The synthesis of 3-X-1-R-o-carborane (X = I, Br and R = Me, Ph) derivatives is reported, and aryldehalogenation at the B3 position is reported for the first time. The molecular and crystal structures of 1-phenyl-3-bromo-1,2-dicarba-closo-dodecaborane and 3-phenyl-1,2-dicarba-closo-dodecaborane are described.