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Fluoroantimonic corrosive is a combination of hydrogen fluoride and antimony pentafluoride, containing different cations and anions (the most straightforward being H2F+ and SbF−6). This substance is a superacid, that can be over a billion times more grounded than 100% unadulterated sulfuric corrosive, contingent upon extent of its fixings. It has been appeared to protonate even hydrocarbons to bear pentacoordinate carbocations (carbonium ions). Extreme alert should be set up when taking care of fluoroantimonic corrosive. It is astoundingly destructive and must be put away in holders fixed with PTFE (Teflon).
As indicated by the old-style definition, a superacid is a corrosive with a sharpness more noteworthy than that of 100% unadulterated sulfuric corrosive, which has a Hammett corrosiveness work (H0) of −12. As per the cutting edge definition, a superacid is a medium wherein the compound capable of the proton is higher than in unadulterated sulfuric corrosive. Economically accessible superacids incorporate trifluoromethanesulfonic corrosive (CF3SO3H), otherwise called triflic corrosive, and fluorosulfuric corrosive (HSO3F), the two of which are around multiple times more grounded (for example have more negative H0 esteems) than sulfuric corrosive. Most solid superacids are set up by the mix of a solid Lewis corrosive and a solid Brønsted corrosive. A solid superacid of this sort is fluoroantimonic corrosive. Another gathering of superacids, the carborane corrosive gathering, contains probably the most grounded known acids. At long last, when treated with anhydrous corrosive, zeolites (microporous aluminosilicate minerals) will contain superacidic destinations inside their pores. These materials are utilized for gigantic scope by the petrochemical business in the redesigning of hydrocarbons to make fills.
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