We report a method to obtain carba-closo-dodecaborate anion CB11H12− from boron cluster B11H14− in up to 95% yield using difluorocarbene to complete the carborane cluster. Difluorocarbene itself comes from readily available Ruppert–Prakash reagent CF3SiMe3. 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.
L. Toom, A. Kütt and I. Leito, Dalton Trans., 2019, 48, 7499 DOI: 10.1039/C9DT01062A
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