Capturing roaming molecular fragments in real time

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Abstract
Roaming dynamics in real time: Roaming is distinct from conventional reaction channels because of the unusual geometries that chemical systems use to bypass the minimum energy pathway. It is a relatively new phenomenon that is usually determined in experiments through spectroscopic characterization of the roaming products. Using a combination of time-resolved Coulomb explosion imaging and quasiclassical trajectory analysis, Endo et al. report real-time observation of individual fragments of the prototypical reaction of deuterated formaldehyde (D 2 CO) dissociation as they roam on ultrafast time scales. They show that roaming not only occurs several orders of magnitude earlier than previously expected but also that it can terminate in a radical (D + DCO) rather than the well-known molecular (D 2 + CO) product channel. Science , this issue p. 1072
Funding Information
  • Natural Sciences and Engineering Research Council of Canada
  • Natural Sciences and Engineering Research Council of Canada
  • Natural Sciences and Engineering Research Council of Canada
  • Natural Sciences and Engineering Research Council of Canada
  • Natural Sciences and Engineering Research Council of Canada
  • Canada Foundation for Innovation
  • Fonds de Recherche du Québec - Nature et Technologies
  • Japan Society for the Promotion of Science (S2601)
  • Japan Society for the Promotion of Science (S2601)

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