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Theories and simulations of roaming

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Abstract

The phenomenon of roaming in chemical reactions has now become both commonly observed in experiment and extensively supported by theory and simulations. Roaming occurs in highly-excited molecules when the trajectories of atomic motion often bypass the minimum energy pathway and produce reaction in unexpected ways from unlikely geometries. The prototypical example is the unimolecular dissociation of formaldehyde (H2CO), in which the “normal” reaction proceeds through a tight transition state to yield H2 + CO but for which a high fraction of dissociations take place via a “roaming” mechanism in which one H atom moves far from the HCO, almost to dissociation, and then returns to abstract the second H atom. We review below the theories and simulations that have recently been developed to address and understand this new reaction phenomenon.

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Publication details

The article was received on 07 Aug 2017 and first published on 05 Oct 2017


Article type: Review Article
DOI: 10.1039/C7CS00578D
Citation: Chem. Soc. Rev., 2017, Advance Article
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    Theories and simulations of roaming

    J. M. Bowman and P. L. Houston, Chem. Soc. Rev., 2017, Advance Article , DOI: 10.1039/C7CS00578D

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