Displacement of Lewis Acid Gases - PF5β,BF3β and SiF4β from Their Ammonium, Alkali Metal and Pyridinium Fluorocomplexes by Sulphur Trioxide at Room Temperature
- Publication date
- Publisher
- Informa plc
Abstract
Lewis acid gases, PF5β,BF3β and SiF4 are liberated from their ammonium, alkali metal and pyridinium fluorocomplexes, NH4βPF6β,NaPF6β,KPF6β,C5βH5βNHPF6β,C5βH5βNHBF4β and (C5βH5βNH)2βSiF6β, when treated with sulphur trioxide at room temperature. The dissociated ammonium/alkali metal fluorides as well as the pyridinium fluoride react further with the excess sulphur trioxide to form the corresponding fluorosulphates. The products, Lewis acid gases and the fluorosulphates, have been 19 characterised by I. R., F NMR and wet chemical analysis. This is the first report of the synthesis of these gases from pyridinium fluorosulphate at room temperature in good yields