Hydrogen ozonide
Hydrogen ozonide () is a radical molecule consisting of a hydrogen atom covalently bonded to an ozonide unit. It is possibly produced in the reaction of the hydroxyl radical with dioxygen: OH• + O2 → HO3•. It has been detected in a mass spectrometer experiment using  (protonated ozone) as precursor. References

Extra reading

Hydrogen compounds
Ozonides