We included an automated scheme in Pynta to enable the generation of thermochemistry and kinetic libraries for updating RMG. We leverage a prior approach developed by Blöndal et al. to derive enthalpies of formation of adsorbates using gas-phase reference species with tabulated enthalpies of formation in the Active Thermochemical Tables (ATcT). Vibrational modes are converted to partition functions with the harmonic oscillator approximation. For weakly bound physisorbed species, where calculations show two or more vibrational frequencies <100 cm -1 , low frequency modes correspond to frustrated transla-