New OTeF5 derivatives of xenon (IV), xenon (VI) and tellurium (VI).

In view of the recent synthesis and characterization of the novel pentagonal planar (D5h) XeF5− anion, it was of interest to attempt the synthesis of the corresponding OTeF5 substituted anion, Xe(OTeF5) 5−, as well as the series of mixed F/OTeF5 anions, XeFn(OTeF5)5−n− (n = 1 − 4). So far all efforts to prepare these anions have failed, rather reactions of Xe (OTeF5)4 with N(CH3) 4+F− or N(CH3)4+OTeF5− in CH3CN have resulted in the formation of the new Xe(IV) oxo-species OXeF(OTeF5) and OXe(OTeF5)2. These species, together with the previously known OXeF2, have been characterized in solution for the first time by 129Xe and 19F NMR spectroscopy.Analogous reactions with OTeF5 derivatives of Xe(VI) and Te(VI) will also be discussed.