The title borane has a fluoride affinity exceeding that of SbF5 which qualifies it as a Lewis superacid and is a much stronger Lewis acid than the ubiquitous B(C6F5)3. The high fluoride ion affinity can be leveraged to abstract fluoride from fluorocarbons and applied in catalytic C-F bond functionalization. The large steric profile of the carboranes makes it an excellent Lewis acid partner in frustrated Lewis pair chemistry. The properties of the feature compound and mechanisms of the reactions will be discussed.

Tris(ortho-carboranyl)borane

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