Zero-Point-Energy Driven Isotopic Exchange of the [H₃O]^- anion Probed by Mid-Infrared Action Spectroscopy.

ABSTRACT: We present the first observation of vibrational transitions in the [H₃O]^- anion, an intermediate in the anion-molecule reaction of water, H₂O, and hydride, H^-, using a laser-induced isotopic H/D exchange reaction action spectroscopy scheme applied to anions. The observed bands are assigned as the fundamental and first overtone of the H₂O-H^- vibrational stretching mode, based on anharmonic calculations within the vibrational perturbation theory and vibrational configuration interaction. Although the D₂O·D^- species has the lowest energy, our experiments confirm the D₂O·H^- isotope to be a sink of the H/D exchange reaction. Ab initio calculations corroborate that the formation o

SUBMITTER: Dinu DF 

PROVIDER: S-EPMC11311240 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature