Here, all steps of the reduction process are barrier-less due to the fact that only the addition of a hydrogen atom is considered. However, depending upon the nature of the hydrogen carrier or the reducing agent, there may exist an activation energy barrier for one or more steps. Though, the reduction process will remain exergonic. Thus, by employing an efficient reducing agent, the conversation of 6B CN to 6 CN and N H 3 would be highly possible.