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New fragmentation pathways in K-THF collisions as studied by electron-transfer experiments: negative ion formation

Journal Article


Abstract


  • Time-of-flight (TOF) negative ion mass spectra have been obtained in collisions of 20-100 eV neutral potassium atoms with tetrahydrofuran (C 4H8O), an analogue for the sugar unit in DNA/RNA. Major enhancements in O- and C2H3O- production were observed compared with earlier dissociative electron attachment (DEA) experiments. In further contrast with DEA, no evidence was observed for dehydrogenated parent anions, and three new fragment anions were detected: CH-, C2 -, and C2H-. These contrasting results for potassium impact and DEA highlight significant differences in the reaction pathways initiated by the two electron delivery processes.

UOW Authors


  •   Almeida, Diego T. (external author)
  •   Da Silva, F. Ferreira (external author)
  •   Limao-Vieira, Paulo (external author)
  •   Eden, S (external author)
  •   Garcia, Gustavo

Publication Date


  • 2014

Citation


  • Almeida, D., Da Silva, F. Ferreira., Eden, S., Garcia , G. & Limao-Vieira, P. (2014). New fragmentation pathways in K-THF collisions as studied by electron-transfer experiments: negative ion formation. The Journal of Physical Chemistry A: Isolated Molecules, Clusters, Radicals, and Ions; Environmental Chemistry, Geochemistry, and Astrochemistry; Theory, 118 (4), 690-696.

Scopus Eid


  • 2-s2.0-84893447229

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3015

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 690

End Page


  • 696

Volume


  • 118

Issue


  • 4

Abstract


  • Time-of-flight (TOF) negative ion mass spectra have been obtained in collisions of 20-100 eV neutral potassium atoms with tetrahydrofuran (C 4H8O), an analogue for the sugar unit in DNA/RNA. Major enhancements in O- and C2H3O- production were observed compared with earlier dissociative electron attachment (DEA) experiments. In further contrast with DEA, no evidence was observed for dehydrogenated parent anions, and three new fragment anions were detected: CH-, C2 -, and C2H-. These contrasting results for potassium impact and DEA highlight significant differences in the reaction pathways initiated by the two electron delivery processes.

UOW Authors


  •   Almeida, Diego T. (external author)
  •   Da Silva, F. Ferreira (external author)
  •   Limao-Vieira, Paulo (external author)
  •   Eden, S (external author)
  •   Garcia, Gustavo

Publication Date


  • 2014

Citation


  • Almeida, D., Da Silva, F. Ferreira., Eden, S., Garcia , G. & Limao-Vieira, P. (2014). New fragmentation pathways in K-THF collisions as studied by electron-transfer experiments: negative ion formation. The Journal of Physical Chemistry A: Isolated Molecules, Clusters, Radicals, and Ions; Environmental Chemistry, Geochemistry, and Astrochemistry; Theory, 118 (4), 690-696.

Scopus Eid


  • 2-s2.0-84893447229

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3015

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 690

End Page


  • 696

Volume


  • 118

Issue


  • 4