Electron transfer-induced fragmentation of thymine and uracil in atom–molecule collisions

Literature Information

Publication Date 2011-07-27
DOI 10.1039/C1CP21340G
Impact Factor 3.676
Authors

D. Almeida, R. Antunes, G. Martins, S. Eden, F. Ferreira da Silva, Y. Nunes


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Abstract

Ion-pair formation has been studied in hyperthermal (30–100 eV) neutral potassium collisions with gas phase thymine (C5H6N2O2) and uracil (C4H4N2O2). Negative ions formed by electron transfer from the alkali atom to the target molecule were analysed by time-of-flight (TOF) mass spectrometry. The most abundant product anions are assigned to CNO− and (U–H)−/(T–H)− and the associated electron transfer mechanisms are discussed. Special emphasis is given to the enhancement of ring breaking pathways in the present experiments, notably CNO− formation, compared with free electron attachment measurements.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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