Polyhedral monocarbaborane chemistry. Routes to neutral, monoanionic and dianionic carbo-carbaborane rods

Abstract

Reaction of [BrC₆H₄CB₉H₁₁]⁻with [BH₃(SMe₂)] followed by iodination and treatment with [MeC₆H₄MgBr] gives the 23 Å [MeC₆H₄C₆H₄CB₁₁H₁₀C₆H₄Me]⁻ monoanion, treatment of [1-Ph-1-CB₉H₁₁]⁻ with FeCl₃ and NC₅H₄-4-CH₂C₆H₅ gives 21.5 Å neutral [PhCB₉H₈NC₅H₄CH₂C₆H₅], and reaction of [1-(4-H₂NC₆H₄)-1-CB₉H₉]⁻ with ClCOC₆H₄COCl gives the 30 Å [(B₉H₉C)C₆H₄NHCOC₆H₄CONHC₆H₄(CB₉H₉)]²⁻ dianion with a Kevlar-like central unit.