Your browser doesn't support javascript.
loading
Photoinduced intermolecular dynamics and subsequent fragmentation in VUV-ionized acetamide clusters.
Tarkanovskaja, Marta; Kooser, Kuno; Levola, Helena; Nõmmiste, Ergo; Kukk, Edwin.
Afiliación
  • Tarkanovskaja M; Department of Physics, University of Tartu, EST-50411 Tartu, Estonia.
  • Kooser K; Department of Physics, University of Tartu, EST-50411 Tartu, Estonia.
  • Levola H; Department of Physics and Astronomy, University of Turku, FIN-20014 Turku, Finland.
  • Nõmmiste E; Department of Physics, University of Tartu, EST-50411 Tartu, Estonia.
  • Kukk E; Department of Physics and Astronomy, University of Turku, FIN-20014 Turku, Finland.
J Chem Phys ; 145(12): 124313, 2016 Sep 28.
Article en En | MEDLINE | ID: mdl-27782678
Photofragmentation of small gas-phase acetamide clusters (CH3CONH2)n (n ≤ 10) produced by a supersonic expansion source has been studied using time-of-flight ion mass spectroscopy combined with tunable vacuum-ultraviolet (VUV) synchrotron radiation. Fragmentation channels of acetamide clusters under VUV photoionization resulting in protonated and ammoniated clusters formation were identified with the discussion about the preceding intramolecular rearrangements. Acetamide-2,2,2-d3 clusters were also studied in an experiment with a gas discharge lamp as a VUV light source; comparison with the main experiment gave insights into the mechanism of formation of protonated acetamide clusters, indicating that proton transfer from amino group plays a dominant role in that process. Geometry of the acetamide dimer was discussed and the most stable arrangement was concluded to be achieved when subunits of the dimer are connected via two N-H⋯O -C hydrogen bonds. Also, the influence of the photon energy on the stability of the clusters and their fragmentation channels has been examined.
Buscar en Google
Añadir a Mi BVS
Imprimir
XML
PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Chem Phys Año: 2016 Tipo del documento: Article País de afiliación: Estonia Pais de publicación: Estados Unidos
Buscar en Google
Añadir a Mi BVS
Imprimir
XML
PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Chem Phys Año: 2016 Tipo del documento: Article País de afiliación: Estonia Pais de publicación: Estados Unidos