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12 paź 2016 · In order to clarify the equilibrium components in the hydrolysis solution of boron trifluoride (BF 3 -H 2 O), the BF 3 -H 2 O was prepared by mixing BF 3 -CH 3 OH with large amount of water, in which the stoichiometric concentration of BF 3 is less than 0.1 mol/L.
1 paź 2016 · In order to clarify the equilibrium components in the hydrolysis solution of boron trifluoride (BF3-H2O), the BF3-H2O was prepared by mixing BF3-CH3OH with large amount of water, in which...
Boron trifluoride reacts with water to give boric acid and fluoroboric acid. The reaction commences with the formation of the aquo adduct, H 2 O−BF 3 , which then loses HF that gives fluoroboric acid with boron trifluoride.
BUT BF3 reacts with the lewis base OH- to form H[BF3OH] and thus affects the pH of the solution - effectivly making the solution more acidic. A similar effect is seen in the boric acid, B(OH3), which forms H[B(OH)4] in water.
20 sty 2016 · It is a non-oxidizing acid catalyst prepared easily by bubbling BF3 into water. We have found boron trifluoride monohydrate/sodium azide combination to be an efficient reagent system for aromatic electrophilic amination.
Hydrofluoric acid is formed when BF3 is gradually hydrolyzed in water. As a result of their planar-trigonal structure, boron fluoride is a nonpolar molecule with zero polar momentum. BF3 is a Lewis acid, like boron tribromide, since it is “electron-deficient” and interacts quickly with Lewis bases to produce Lewis adducts, such as in the ...
BF 3 -SiO 2 catalyzed synthesis of tetrahydropyridines. The above described synthetic applications of the BF 3 -silica catalyst (Schemes 5.1–5.4) all appear to fulfill the major requirements for green synthesis.
