The question of dihydrogen, how it is produced, and how it is used is central to sustainability issues and the decarbonization of the industry. The reversibility of catalytic hydrogenation and dehydrogenation processes is at the heart of this question, as is the transport of H2 by liquid organic carriers (LOHC). 2 This is particularly true in research on Sustainable Aviation Fuels (SAF) and shipping. Ammonia has been proposed as a desirable hydrogen carrier for the latter because of its hydrogen density and also as a direct fuel. Still, direct ammonia combustion poses the question of N2O formation, a potent greenhouse gas. Catalytic processes that combine the cleavage of H2 and selective transfer to nitrogen are desirable. Using low-cost heterogeneous catalytic systems, the Haber-Bosch process is currently the most efficient industrial process for producing ammonia by nitrogen hydrogenation. While it is difficult to question the massive production of ammonia via this process, smaller-scale units in less industrial environments, where H2 is produced from green methods, could make way for catalysts capable of generating ammonia at lower energy costs and with greater versatility. Developing processes that can split the H2 molecule and selectively functionalize simple substrates, such as nitrogen (for ammonia) or CO2 (for formic acid or methanol), 7 remains a major challenge in modern organometallic chemistry.