Laboratory investigations of negative ion molecule reactions of propionic,butyric, glyoxylic,pyruvic, and pinonic acids |
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| Institution: | 1. Laboratory of Composite and Biomimetic Materials, Center for Interdisciplinary Research, The John Paul II Catholic University of Lublin, Konstantynów 1J, 20-708 Lublin, Poland;2. Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS 8516, , Université de Lille 1, Bat. C5, 59655 Villeneuve d''Ascq Cedex, France;3. Université Grenoble Alpes, CeNRS, IRD, IGE, F-38000 Grenoble, France;4. Université de Bordeaux, Institut des Sciences Moléculaires, CNRS UMR 5255, 351 cours de la Libération, 33405 Talence cedex, France |
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| Abstract: | We have carried out laboratory measurements of gas-phase ion-molecule-reactions of several negative ion species with propionic, butyric, glyoxylic, pyruvic, and pinonic acids. A flow reactor operating at a temperature of 293 ± 3 K and total gas pressures of 1.5 hPa, 9 hPa, or 40 hPa were used. The negative reagent ion species investigated included CO3?, CO3?H2O, NO3?, NO3?H2O, NO2?, NO2?H2O, and O3?. The reactions were found to proceed either via proton transfer, switching, or clustering. A new proton transfer channel leading to alkylperoxy carboxylate radicals (R?H(OO·)COO?) was observed for propionic, butyric, and pinonic acids. |
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