GSTDTAP  > 地球科学
DOI10.1073/pnas.2004881117
A chemical dynamics study on the gas phase formation of thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH)
Srinivas Doddipatla; Chao He; Ralf I. Kaiser; Yuheng Luo; Rui Sun; Galiya R. Galimova; Alexander M. Mebel; Tom J. Millar
2020-08-28
发表期刊Proceedings of the National Academy of Science
出版年2020
英文摘要

Complex organosulfur molecules are ubiquitous in interstellar molecular clouds, but their fundamental formation mechanisms have remained largely elusive. These processes are of critical importance in initiating a series of elementary chemical reactions, leading eventually to organosulfur molecules—among them potential precursors to iron-sulfide grains and to astrobiologically important molecules, such as the amino acid cysteine. Here, we reveal through laboratory experiments, electronic-structure theory, quasi-classical trajectory studies, and astrochemical modeling that the organosulfur chemistry can be initiated in star-forming regions via the elementary gas-phase reaction of methylidyne radicals with hydrogen sulfide, leading to thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH). The facile route to two of the simplest organosulfur molecules via a single-collision event affords persuasive evidence for a likely source of organosulfur molecules in star-forming regions. These fundamental reaction mechanisms are valuable to facilitate an understanding of the origin and evolution of the molecular universe and, in particular, of sulfur in our Galaxy.

领域地球科学
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/293133
专题地球科学
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Srinivas Doddipatla,Chao He,Ralf I. Kaiser,et al. A chemical dynamics study on the gas phase formation of thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH)[J]. Proceedings of the National Academy of Science,2020.
APA Srinivas Doddipatla.,Chao He.,Ralf I. Kaiser.,Yuheng Luo.,Rui Sun.,...&Tom J. Millar.(2020).A chemical dynamics study on the gas phase formation of thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH).Proceedings of the National Academy of Science.
MLA Srinivas Doddipatla,et al."A chemical dynamics study on the gas phase formation of thioformaldehyde (H2CS) and its thiohydroxycarbene isomer (HCSH)".Proceedings of the National Academy of Science (2020).
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