FORMATION DES DÉRIVÉS PENTAFLUOROSULFURES ÉTHYLÈNIQUES, DIÈNIQUES ET ACÉTYLÈNIQUES

The reaction of disulfur decafluoride with olefins, dienes, and acetylenes has been studied under pressure at 125–140 °C. The gases formed have been separated and identified with a gas chromatograph coupled to a time-of-flight mass spectrometer. Liquid pentafluorosulphur derivatives, studied by mass spectrometry, were attributed the following structures: CH2FCHClSF5, CH2FCHBrSF5, CH2FCHBrCH2CHBrSF5, CH2FCHFCH2CHFSF5, and CH2=CHCHFCH2SF5. Addition compounds of dienes or acetylenes have structures assumed to be FCH2CF2CH2SF5 from propadiene and C2H5CF2CHFSF5 from ethyl acetylene.