Catalytic role of HI in the interstellar synthesis of complex organic molecule

Abstract Using quantum chemical calculations, we model the pathways for synthesizing adenine and guanine in gas-phase interstellar environment, surrounded by neutral atomic hydrogen (HI). HI is found active facilitating a series of fundamental proton transfer processes organic synthesis, including bond formation, cyclization, dehydrogenation, H migration. The reactive potential barriers were significantly reduced alternative created HI, leading to remarkable increase reaction rate. presence also lowered activation temperature from 757.8 K 131.5-147.0 K, indicating thermodynamic feasibility these star-forming regions where some reactants have been astronomically detected. Our findings suggest that may serve as an effective catalyst synthesis.