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DOI | 10.1073/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
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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 |
URL | 查看原文 |
引用统计 | |
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 |
推荐引用方式 GB/T 7714 | 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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