[Xe(OTeF5)(pyF)]+: a strong oxidizing xenonium(ii) teflate cation with N-donor bases

Abstract

Herein we report on the formation of the adduct salts [Xe(OTeF₅)(py^F)][Al(OTeF₅)₄] (py^F = C₅F₅N, C₅H₃F₂N) by abstraction of an –OTeF₅ group from Xe(OTeF₅)₂ with the Lewis superacid Al(OTeF₅)₃ and subsequent adduct formation of the generated [XeOTeF₅]⁺ cation with fluorinated pyridines. These salts represent the first xenonium cations with the weakly coordinating [Al(OTeF₅)₄]⁻ anion. The strong oxidizing property of these compounds is further assessed.