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According to calculations, ortho-diethynylbenzene dianion is the strongest superbase and has a proton affinity of 1,843.987 kJ/mol (440.723 kcal/mol). [1] The meta isomer is the second-strongest, and the para isomer is the third. All three are readily able to accept any proton to its ethynyl tails, from almost any compound.
A superbase is a compound that has a particularly high affinity for protons. Superbases are of theoretical interest and potentially valuable in organic synthesis . [ 1 ] [ 2 ] Superbases have been described and used since the 1850s.
In chemistry, the Verkade base (or Verkade superbase) is a powerful superbase with the formula P(MeNCH 2 CH 2) 3 N. A colorless oil, it is an aminophosphine although its inventor John Verkade called it proazaphosphatrane. The trimethyl derivative or 2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane is the simplest. [1]
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P 4-t-Bu is a readily accessible chemical from the group of neutral, peralkylated sterically hindered polyaminophosphazenes, which are extremely strong bases but very weak nucleophiles, with the formula (CH 3) 3 C−N=P(−N=P(−N(CH 3) 2) 3) 3. "t-Bu" stands for tert-butyl (CH 3) 3 C –. "P 4" stands for the fact that this molecule has 4 ...
At 140 °C (284 °F), FSO 3 H–SbF 5 protonates methane to give the tertiary-butyl carbocation, a reaction that begins with the protonation of methane: [4] CH 4 + H + → CH + 5 CH + 5 → CH + 3 + H 2 CH + 3 + 3 CH 4 → (CH 3) 3 C + + 3H 2. Common uses of superacids include providing an environment to create, maintain, and characterize ...