The association reaction C2H3++CO and interstellar propynal.
Abstract
Two different C2H3+ ions were generated in a selected-ion flow tube operating at room temperature. C-2 protonated propadienone, H2C=CHCO+, was produced by the association reaction between C2H3+ and CO. Protonated propynal, HC≡C-CHOH+, was produced by proton transfer to propynal, HC≡C-CHO. The ions were identified by their proton transfer reactions with C2H5NH2, CH3NH2, C4H5N, NH3, (n-C4H9)2O, (C2H5)2CO, C6H10O, C6H6 and C2H5I. Rate coefficients and branching ratios are reported for these reactions. The implications of this work for the synthesis of HC≡C-CHO in interstellar clouds are discussed.
- Publication:
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International Journal of Mass Spectrometry and Ion Processes
- Pub Date:
- November 1995
- Bibcode:
- 1995IJMSI.149..251S
- Keywords:
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- Interstellar Clouds: Chemistry