Simple and scalable synthesis of the carborane anion CB11H12−. Issue 22 (26th March 2019) - Toom, Lauri
Abstract : Simple and easily scalable preparation of the useful carborane anion CB11 H12 − is reported using a boron cluster B11 H14 − and CF3 SiMe3 . Abstract : We report a method to obtain carba- closo -dodecaborate anion CB11 H12 − from boron cluster B11 H14 − in up to 95% yield using difluorocarbene to complete the carborane cluster. Difluorocarbene itself comes from readily available Ruppert–Prakash reagent CF3 SiMe3 . The synthesis is straightforward to carry out in heavy wall glass pressure tubes without the need for a glove-box and is easily scalable to 15 g scale.