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Potassium hexafluorophosphate is the chemical compound with the formula KPF₆. This colourless salt consists of potassium cations and hexafluorophosphate anions. This exothermic reaction is conducted in liquid hydrogen fluoride. The salt is stable in hot alkaline aqueous solution, from which it can be recrystallized. The sodium and ammonium salts are more soluble in water whereas the rubidium and caesium salts are less so.
A method for synthesizing tri(p-tolyl)thionium hexafluorophosphate
PendingCN122079841AOrganic chemistrySodium/potassium compoundsPotassium hexafluorophosphatePhosphate
This invention discloses a method for synthesizing tri(p-tolyl)thionium hexafluorophosphate, comprising the following steps: di(4-chlorophenyl) sulfoxide is mixed uniformly with a solvent, and p-tolyl magnesium bromide is slowly added under an inert atmosphere. After stirring for 10 min, trimethylchlorosilane is added dropwise. After the reaction is complete, a 25 wt.% hydrobromic acid aqueous solution is added dropwise to quench the reaction. After extraction and vacuum concentration, tri(p-tolyl)thionium bromide is obtained. A potassium hexafluorophosphate aqueous solution is added to the tri(p-tolyl)thionium bromide and stirred. After the reaction is complete, the mixture is filtered, and the filter cake is recrystallized to obtain tri(p-tolyl)thionium hexafluorophosphate. This invention uses inexpensive and readily available raw materials, employs mild activation conditions, has high production safety, and achieves a yield of up to 71.34% for the obtained tri(p-tolyl)thionium hexafluorophosphate.
Owner:HEBEI UNIV OF SCI & TECH