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What is the strongest acid? Can a simple Brønsted acid be prepared that can protonate an alkane at room temperature? Can that acid be free of the complicating effects of added Lewis acids that are typical of common, difficult‐to‐handle superacid mixtures? The carborane superacid H(CHB11F11) is that acid. It is an extremely moisture‐sensitive solid, prepared by treatment of anhydrous HCl with [Et3SiHSiEt...
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