The calculated ∆𝐸 for Rx4 is 0.66 eV as seen on Figure , making it an unfavourable coupling pathway comparatively to Rx2. Thus, from the DFT point of view, products such as acetamide with multiple carbons are first gone under C-N coupling step and then C-C coupling is carried out. Otherwise, it is expected that single-carbon C-N products to be more dominant compared to multicarbon C-N products if a relatively low potential is applied.