The E hydro obtained by DFT for one-and two-side hydrogenated chains were 1.273 eV/atom and -0.980 eV/atom, respectively. These DFT results indicate that two-side hydrogenation is energetically 2.253 eV/atom more favorable than one-side saturation. Similarly, the ANN potential results indicate that the two-side hydrogenated chain is 2.326 eV/atom more favorable than the one-side configuration, with E hydro values of 1.601 eV/atom for the one-side and -0.725 eV/atom for the two-side configurations, respectively. Therefore, despite absolute value differences between DFT and the ANN potential for E hydro , the physical trends are consistent.