Fig. 2: Molecular structure of the fluoronium ion 1 as its [Sb2F11]⋅(SO2ClF)3 salt in the solid state.

Anion and solvent molecules are not depicted. Thermal ellipsoids set to 50% probability. Selected bond lengths [pm] and angles [°]: F1–C1 156.6(3), F1–C2 158.7(3), C1–F1–C2 115.64(17), O2–C14–O1–Sb1 19.0(4).