“…24 This PES for the O + O 2 system is characterized by a deep well corresponding to O 3 , with a submerged potential barrier ("reef") in the O + O 2 entrance/exit channel, now thought to be an artifact. [25][26][27] If the complex lived long enough, then the energy would be completely randomized among the degrees of freedom, and the products would be scattered into all spatial directions with equal probability, corresponding to a forward-backward symmetric c.m. angular distribution.…”