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

Abstract

Solid Te₄(AsF₆)₂ and Te₆(AsF₆)₂ react with tetrafluoroethylene at 100 °C to give (C₂F₅)₂Te_x(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.