https://doi.org/10.1351/goldbook.R05306
A surface for an
exergonic reaction
A + BC in which the col corresponds to considerable separation between the products A–B + C. The energy barrier in the potential-energy profile
is in the later stages of the reaction path
. On such a surface most of the energy is released after A–B is formed. Repulsive surfaces are also called late-downhill surfaces, and the barrier in such a surface is called a Type-II barrier.