High-resolution energy-selected study of the reaction NH3 +→NH2 ++H : Accurate thermochemistry for the NH2/NH2 + and NH3/NH3 + systems

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  • Y. Song
  • X. M. Qian
  • C. Y. Ng
  • Jianbo Liu
  • Wenwu Chen


Original languageEnglish
Pages (from-to)2582-2589
Journal / PublicationJournal of Chemical Physics
Issue number6
Publication statusPublished - 8 Aug 2001
Externally publishedYes


The unimolecular dissociation of energy-selected NH3 + near its threshold for the formation of NH2 ++ H was examined using a high-resolution PFI-PEPICO technique. Highly accurate values for D0(H-NH2 +), IE(NH2), and ΔH° f0(NH2 +) were determined through appropriate thermochemical cycles. Similar to previous studies, a sharp step-like feature was observed in the PFI-PE spectrum of NH3.

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