A medium having a high @[email protected], generally greater than that of 100 wt.% sulfuric acid. The common superacids are made by dissolving a powerful @[email protected] (e.g. SbF5) in a suitable @[email protected] such as HF or HSO3F. (An equimolar mixture of HSO3F and SbF5 is known by the trade name 'magic acid'.) In a biochemical context 'superacid @[email protected]' is sometimes used to denote @[email protected] by metal ions analogous to @[email protected] by hydrogen ions. By analogy, a compound having a very high @[email protected], such as lithium diisopropylamide, is called a 'superbase'.
PAC, 1994, 66, 1077. (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1169 [Terms] [Paper]