![]() CsF is an alternative to tetra-n-butylammonium fluoride (TBAF) and TAS-fluoride (TASF).Īs with other soluble fluorides, CsF is moderately basic, because HF is a weak acid. At 825 ☌, CsF has a vapor pressure of 1 kilopascal, 10 kPa at 999 ☌, and 100 kPa at 1249 ☌.ĬsF chains as thin as one or two atoms can be grown inside carbon nanotubes.Ĭaesium fluoride has a halite structure, which means that the Cs+ and F− pack in a cubic closest-packed array as do Na+ and Cl− in sodium chloride.īeing highly dissociated, CsF is a more reactive source of fluoride than related salts. It is available in anhydrous form, and if water has been absorbed, it is simple to dry in vacuo by heating at 100 ☌ for two hours. In organic solvents, CsF is more soluble than sodium fluoride or potassium fluoride. The reaction is depicted below:Īnother method for producing caesium fluoride is to react caesium carbonate (Cs2CO3) with hydrofluoric acid, and the resulting salt can then be purified by recrystallization. It can be made by reacting caesium hydroxide (CsOH) with hydrofluoric acid (HF), and the resulting salt can then be purified by recrystallization. Solubility: Insoluble in acetone, diethyl ether, pyridine and ethanol 191 g/100 mL in methanol.Ĭaesium fluoride can be made by reacting hydrofluoric acid with caesium hydroxide or caesium carbonate and then removing the water.Caesium also has the highest electropositivity of any non-radioactive element, while fluorine has the highest electronegativity of any element known to science. It is more soluble and dissociates more easily than sodium fluoride or potassium fluoride.Ĭaesium fluoride can be used as a fluoride anion source in organic synthesis. It is an ionic compound that typically appears as a hygroscopic white solid. ![]() Caesium fluoride, also known as cesium fluoride, is a hygroscopic white salt and an inorganic compound with the formula CsF.
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