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Dissociative electron attachment to acetic acid (CH3COOH)

✍ Scribed by Wolfgang Sailer; Andrzej Pelc; Michael Probst; Jumras Limtrakul; Paul Scheier; Eugen Illenberger; Tilmann D Märk

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
464 KB
Volume
378
Category
Article
ISSN
0009-2614

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✦ Synopsis

Dissociative electron attachment (DEA) to acetic acid in the energy range between about 0 and 13 eV generates as much as nine different fragment ions. The dominant products are CH 3 COO À and CH 2 O À 2 which appear from two closely spaced low energy resonances peaking at 0.75 and 1.5 eV. In view of our ab initio calculation we assign these states as single particle shape resonances associated with the first and second virtual MO, respectively. The electronic and geometrical structure of CH 2 O À 2 remains under question, the thermodynamics of the associated DEA reaction, however, predict an exceptionally high stability of this anion.

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