Reaction of tetratellurium(2+) bis(hexafluoroarsenate), Te4(AsF6)2, and hexatellurium(2+) bis(hexafluoroarsenate), Te6(AsF6)2, with tetrafluoroethylene. The preparation of bis(perfluoroethyl) mono- and di-telluride

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Abstract
Solid Te4(AsF6)2 and Te6(AsF6)2 react with tetrafluoroethylene at 100 °C to give (C2F5)2Tex(x= 1 or 2) and C4F9TeC2F5. In sulphur dioxide solution Te4(AsF6)2 and tetrafluoroethylene yield C2F5TeC3F6C(O)F in addition to products found for the neat reactions. C2F5SeTeC2F5 and C2F5TeHgTeC2F5 have also been prepared. Compounds were identified by their mass spectra, and by 19F n.m.r. in the case of the perfluoroalkyl tellurides.