For 10 points, name these substances that are stronger than H2SO4.
Nafion-H is a solid example of these substances which can accelerate the Ritter reaction, and another example of these substances is a cluster compound containing 11 chloride groups bound to carborane. Sommer and Co used p-methoxybenzhydryl to characterize these substances, which sometimes name a form of enzymatic catalysis in which metal ions participate directly. A scale used to characterize these substances was developed with the help of Alden Deyrup and used p-nitroaniline. One of these substances was used to make a methyl doublet disappear when it was used to dissolve a tert-butyl halide; that experiment measured an (*) NMR spectrum of a stable carbocation and was conducted by George Olah using the "magic" one of these substances. These substances are classified by having a Hammett function less than negative twelve, and examples of them include a mixture of hydrogen fluoride and antimony pentafluoride, which can protonate hydrocarbons. For 10 points, name these substances that are stronger than H2SO4.
Nafion-H is a solid example of these substances which can accelerate the Ritter reaction, and another example of these substances is a cluster compound containing 11 chloride groups bound to carborane.
superacid [prompt on “acid”]