Bridged heterocyclium dicationic closo- icosahedral perfluoroborane, borane, and carborane salts via aqueous, open-air benchtop synthesis

摘要

(Figure presented) Thirteen bridged triazolium and imidazolium dicationic salts, which uniquely pair closo-icosahedral perfluoroborane [B _(12)F_(12)]~(2-), borane [B_(12)H _(12)]~(2-), or carborane [CB_(11)H_(12)] ~- anionic species with unsaturated bridged heterocyclium dications, were synthesized using an aqueous benchtop method. This considerably extends the scope of a reported aqueous synthesis of binary [heterocyclium] _2[B_(12)H_(12)] and [heterocyclium][CB _(11)H_(12)] salts. Also, the one-step preparation of five new precursor bridged heterocyclium dicationic dihalide salts using conventional procedures and in one case a microwave-assisted method is described.