Photochemical dehydration of acetamide in a cryogenic matrix

Fabrice Duvernay, Pascal Chatron-Michaud, Fabien Borget, David M. Birney, Thierry Chiavassa

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25 Scopus citations


Vacuum ultraviolet (VUV) irradiation of acetamide has been monitored by Fourier transform infrared spectroscopy in argon matrix at 10 K. Several primary photoproducts, including HNCO : CH4 and CO : CH3NH 2 molecular complexes, and acetimidic acid, which is reported for the first time, were characterized. The acetimidic acid identification was based on comparison between the experimental and theoretical (B3LYP) infrared spectra. Acetimidic acid is found in argon matrix in the (s-Z)-(E) and (s-Z)-(Z) configurations. It is also an intermediate in the VUV decomposition process, its dehydration leads to the formation of CH3CN : H2O molecular complex. The assignment of the complex was achieved by co-depositing the pairs of respective species and by ab initio calculation. This journal is

Original languageEnglish
Pages (from-to)1099-1106
Number of pages8
JournalPhysical Chemistry Chemical Physics
Issue number9
StatePublished - 2007


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