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Antimony trifluoride is the inorganic compound with the formula SbF 3. Sometimes called Swarts' reagent, it is one of two principal fluorides of antimony, the other being SbF 5. It appears as a white solid. As well as some industrial applications, [2] it is used as a reagent in inorganic and organofluorine chemistry.
Swarts fluorination is a process whereby the chlorine atoms in a compound – generally an organic compound, but experiments have been performed using silanes – are replaced with fluorine, by treatment with antimony trifluoride in the presence of chlorine or of antimony pentachloride. Some metal fluorides are particularly more useful than ...
Antimony trifluoride, SbF 3; Antimony pentafluoride, SbF 5 This page was last edited on 12 March 2021, at 07:30 (UTC). Text is available under the Creative Commons ...
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Carboxylic acids can be converted to trifluoromethyl groups by treatment with sulfur tetrafluoride and trihalomethyl compounds, particularly trifluoromethyl ethers and trifluoromethyl aromatics, are converted into trifluoromethyl compounds by treatment with antimony trifluoride/antimony pentachloride (the Swarts reaction).
Ethyl trifluoroacetate can be obtained by reacting 2,4,6-tris-(trifluoromethyl)-1,3,5-triazine with ethanol in the presence of hydrochloric acid. The former, in turn, can be prepared by a two-step reaction starting from trichloroacetonitrile by reaction with hydrogen chloride and fluorination of the intermediate with antimony trifluoride.
Thionyl fluoride can be produced by the reaction of thionyl chloride with fluoride sources such as antimony trifluoride. [4] [3]: 542 3 SOCl 2 + 2 SbF 3 → 3 SOF 2 + 2 SbCl 3. Alternatively, it arises via the fluorination of sulfur dioxide: [3]: 542 SO 2 + PF 5 → SOF 2 + POF 3
Sodium hexafluoroantimonate may be synthesised by oxidation of antimony trioxide with bromine trifluoride: 6Sb 2 O 3 + 20BrF 3 + 12NaF → 12Na[SbF 6] + 10Br 2 + 9O 2. Or it may be formed by reaction of antimony and sodium fluorides: SbF 5 + NaF → Na[SbF 6]