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D atom loss in the photodissociation of the DNCN radical: implications for prompt NO formation.

Authors
  • Szpunar, David E
  • Faulhaber, Ann Elise
  • Kautzman, Kathryn E
  • Crider, Paul E 2nd
  • Neumark, Daniel M
Type
Published Article
Journal
The Journal of chemical physics
Publication Date
Mar 21, 2007
Volume
126
Issue
11
Pages
114311–114311
Identifiers
PMID: 17381210
Source
Medline
License
Unknown

Abstract

The photodissociation of DNCN following excitation of the C 2A"<--X 2A" electronic transition was studied using fast beam photofragment translational spectroscopy. Analysis of the time-of-flight distributions reveals a photodissociation channel leading to D+NCN competitive with the previously observed CD+N2 product channel. The translational energy distributions describing the D+NCN channel are peaked at low energy, consistent with internal conversion to the ground state followed by statistical decay and the absence of an exit barrier. The results suggest a relatively facile pathway for the reaction CH+N2-->H+NCN that proceeds through the HNCN intermediate and support a recently proposed mechanism for prompt NO production in flames.

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