Comment on 'rate coefficients for photoinitiated NO2 unimolecular decomposition: Energy dependence in the threshold regime' [Chem. Phys. Lett. 358 (2002) 71]

  • Abel B
  • Grebenshchikov S
  • Schinke R
 et al. 
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Abstract

Recently, Wittig and co-workers have published rate coefficients k(E) for the unimolecular decomposition of photoinitiated NO2 close to the dissociation threshold [Chem. Phys. Lett. 358(2002) 71]. They found out that k(E) for low angular momentum J exhibits a strong increase within 25 cm-1of the reaction threshold. The authors emphasize that their experimental results are surprising and cannot be understood quantitatively on the basis of current theory on NO2. In this Comment we demonstrate that recent quantum mechanical calculations of NO2resonances on a global 3D-potential energy surface can indeed explain their data close to the dissociation threshold as well as for larger excess energies. © 2002 Elsevier Science B.V. All rights reserved.

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Authors

  • B. Abel

  • S. Y. Grebenshchikov

  • R. Schinke

  • D. Schwarzer

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