to below 193 K:

The dimerization can be attributed to the overlapping of the half-filled ?* orbitals in two .

in is structurally analogous to , but decomposes at 195 K to give , and salts of instead of .

Attempts to prepare and by fluorinating and using NOF have met with failure, because the following reactions occurred:

The anions are less reactive compared to the cations, and are generally weaker oxidants than their parent interhalogens.