Excited vibrational levels of ground electronic states of molecular systems containing -XH chromophores can undergo reactions by either efficient intramolecular vibrational redistribution (IVR) from the excited level to a weak bond in the molecule or by concerted processes involving the simultaneous breaking of several bonds. The reaction dynamics following excitation of vibrational levels near the turning point will be presented with emphasis on concerted reactions proceeding by vibrational overtone pumping of the -OH chromophore in acids. The implications of this chemistry to sunlight-driven processing in planetary atmospheres will be discussed.

High amplitude vibrational overtone transitions: Sunlight driven atmospheric reactions

251st National Meeting (2016)

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