Rees polycyanated hydrocarbons and related compounds are extremely powerful Brønsted superacids in the gas-phase and DMSO—a density functional B3LYP study

Spontaneous proton transfers induced by beryllium bonds

“…Some theoretical predictions in this sense have been reported in the literature [8][9][10][11]. This indeed motivated a significant interest of many groups into the design of both superacids [12][13][14][15][16] and superbases [17][18][19][20][21][22]. Also some efforts have been devoted to investigate what are the necessary conditions to change the typical hydrogen bond (HB), A-H····B which is normally formed between a protic acid AH and a base B into an A − ····HB + ion pair, in other words where are the boundaries which separate the domain of conventional HBs from the domain of ion pairs [10].…”

Superhalogen and Superacid

“…The idea of symmetric cage surrounded with electronwithdrawing groups is barely new. [2,[6][7][8][9][10][11][12] For example, one of the strongest currently known Brønsted acids is fluorocarborane acid H[CHB 11 F 11 ]. [13] Its anion is formed by a carborane cage surrounded with fluorine atoms and shows superhalogenic behavior.…”

Basicity of Very Weak Bases in 1,2‐Dichloroethane

“…Many processes in chemistry and related disciplines rely on strong acids. In recent years, much effort has gone into developing ever stronger acids and measuring their strengths . By definition, acidity is linked to basicity and vice versa: whenever there is a compound donating a proton, there has to be another that accepts it.…”