Collisional excitation of E - and Z -ethanimine to model cold molecular clouds

This paper provides the first state-to-state collisional rate coefficients for E- and Z-ethanimine, a prebiotically relevant molecule, in collisions with helium and para-H2 over 5–100 K. The rates were computed from quantum scattering calculations for He and extended to para-H2 using scaling factors derived from comparisons with mixed quantum-classical calculations. The datasets are intended to support non-LTE modeling of ethanimine in cold interstellar clouds and future searches beyond Sgr B2(N).