Trifluoromethanesulfonates of iodine

Article abstract of DOI:10.1021/ic50129a041

Iodine tris(trifluoromethanesulfonate), I(OSO₂CF₃)₃, is obtained in the oxidation of iodine by stoichiometric amounts of S₂O₆F₂ in trifluoromethanesulfonic acid, as a sparingly soluble precipitate. The compound is thermally stable up to +170° and its vibrational spectrum indicates the presence of both monodentate and bidentate bridging SO₃CF₃ groups. Reaction with the stoichiometric amount of iodine at +140° results in the formation of iodine(I) trifluoromethanesulfonate. Several routes to salts of the type M^I[I(OSO₂CF₃)₄], with M^I = K, Rb, or Cs, are also described. Vibrational spectra for these and for IOSO₂CF₃ are reported.