Studies on synthesis of boron and carborane cage derivatives

Weakly coordinating anions are extremely versatile species for capturing andcharacterizing cationic intermediates. Among these anions, carboranes andsome boranes are known to be the most weakly coordinating anions. In thisstudy, the carboranes and boranes were synthesized in order to use in differentfields. B11H14- was synthesized from NaBH4 and used to synthesize CB11H12-.CB11H12- was synthesized by carbene addition to undecaborate. B11H14- wasconverted to B10H14 by oxidation and extrusion of one boron vertex. CB11H12- wasmethylated on boron vertex to get HCB11Me11-. The methylated carborane cagesare more hydrophobic and weakly coordinating anions.

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