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Mechanism of Prebiotic Uracil Synthesis from Urea and HC3O+ in Spaceopen access
- Authors
- Choe, Joong Chul
- Issue Date
- Nov-2022
- Publisher
- Mary Ann Liebert Inc.
- Keywords
- Prebiotic chemistry; Astrobiology; Interstellar medium; Interstellar molecules
- Citation
- Astrobiology, v.22, no.11, pp 1363 - 1369
- Pages
- 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- Astrobiology
- Volume
- 22
- Number
- 11
- Start Page
- 1363
- End Page
- 1369
- ISSN
- 1531-1074
1557-8070
- Abstract
- The potential energy surface for the formation of protonated uracil (UH+) from urea and HC3O+ was explored by performing quantum chemical complete basis set-QB3 calculations. A barrierless pathway was found for the formation of UH+, which was estimated to occur in the interstellar medium (ISM) much faster than the timescale of chemical revolution of typical dense interstellar clouds. Investigation of further reactions of UH+ formed through the obtained pathway led to the conclusion that uracil could be produced on icy grain surfaces but not in the gas phase of the ISM.
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Related Researcher
- Choe, Joong Chul
- College of Natural Science (Department of Chemistry)