Hannover 2020 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 4: Clusters and Molecules

MS 4.4: Vortrag

Dienstag, 10. März 2020, 15:00–15:15, f128

Dissociative Electron Attachment Studies with 2-Nitrofuran — •Muhammad Saqib, Eugene Arthur-Baidoo, Milan Oncak, and Stephan Denifl — University of Innsbruck ,6020 Innsbruck, Austria

Nitrofurans belong to the class of drugs typically used as antibiotics or antimicrobials. The defining structural component is a furan ring with a nitro group attached. In the present investigation, dissociative electron attachment (DEA) to 2-Nitrofuran (C4H3NO3), which is considered as a potential radiosensitizer candidate for application in radiotherapy, has been studied in a crossed electron*molecular beams experiment. The present results indicate that low-energy electrons with kinetic energies from about 0 - 14 eV effectively decompose the molecule by DEA. In total, fifteen fragment anions were detected within the detection limit of the apparatus, as well as the parent anion of 2-Nitrofuran. Two major resonance regions, at which the anions are formed, are observed, one between ~0 eV and 5 eV and a second one in the range from 7 eV to 10 eV. (NO2)-, (C4H3O)-, and (C4H3NO3)- is the most abundant fragment anion observed. The experimental results are compared with calculations of the thermochemical thresholds of the anions observed. The current study shows that low-energy electrons very effectively decompose the 2-Nitrofuran molecule upon attachment of low energy electrons, producing a large variety of charged fragments and radicals. This work was supported by the FWF, Vienna (P30332).

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