In chemistry, chloryl refers to a triatomic cation with chemical formula ClO+2.

[1][2] The ClO+2 cation is isoelectronic with SO2,[3] and has a bent structure with a bond angle close to 120°.

The strength of interaction with the counterion affects the energy of this antibonding orbital; thus, in colorless chloryl compounds, strong interactions with the counterion, corresponding with the higher covalent character of the bonding, shift the transition energy out of the visible spectrum.

In the solid state, the Raman and infrared spectra indicate strong interactions with the counterion.

For example:[5] Other synthesis routes are also possible, including:[5] Metathesis reactions may be carried out with strong Lewis bases.