A study of the thermal decomposition of 2-azidoacetamide by ultraviolet photoelectron spectroscopy and matrix-isolation infrared spectroscopy: Identification of the imine intermediate H2NCOCHNH

John M. Dyke, Giacomo Levita, Alan W. Morris, Julius Steven Ogden, António Alberto Dias, Manuel Algarra González, José Paulo Moreira dos Santos, Maria de Lourdes Santos Lourenço Costa, Paula R.S. Rodrigues, Maria Teresa Barros

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23 Citations (Scopus)

Abstract

The thermal decomposition of 2-azidoacetamide (N3CH2CONH2) has been studied by matrix-isolation infrared spectroscopy and real-time ultraviolet pbotoelectron spectroscopy. N-2, CH2NH, HNCO, CO, NH3, and HCN are observed as high-temperature decomposition products, while at lower temperatures, the novel imine intermediate H2NCOCH=NH is observed in the matrix-isolation IR experiments. The identity of this intermediate is confirmed both by ab initio molecular orbital calculations of its IR spectrum and by the temperature dependence and distribution of products in the photoelectron spectroscopy (PES) and IR studies. Mechanisms are proposed for the formation and decomposition of the intermediate consistent both with the observed results and with estimated activation energies based on pathway calculations.
Original languageEnglish
Pages (from-to)5299-5307
Number of pages9
JournalJournal of Physical Chemistry A
Volume108
Issue number25
DOIs
Publication statusPublished - 24 Jun 2004

Keywords

  • Semiconductor materials
  • Synthesis (chemical)
  • Activation energy
  • Evaporators
  • Infrared spectroscopy
  • Mass spectrometry
  • Nitrogen compounds
  • Photoelectron spectroscopy
  • Pyrolysis
  • Solid propellants

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