Low-temperature gas-phase formation of cyclopentadiene and its role in the formation of aromatics in the interstellar medium
文献类型：期刊论文
| 作者 | Yang, Zhenghai4; Medvedkov, Iakov A.4; Goettl, Shane J.4; Nikolayev, Anatoliy A.3; Mebel, Alexander M.1; Li, Xiaohu2,5,6 ; Kaiser, Ralf I.4
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| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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| 出版日期 | 2024-12-17 |
| 卷号 | 121期号:51页码:2409933121 |
| 关键词 | reaction dynamics five- membered ring polycyclic aromatic hydrocarbon interstellar medium aromaticity |
| ISSN号 | 0027-8424 |
| DOI | 10.1073/pnas.2409933121 |
| 产权排序 | 4 |
| 英文摘要 | The cyclopentadiene (C5H6) molecule has emerged as a molecular building block of nonplanar polycyclic aromatic hydrocarbons (PAHs) and carbonaceous nanostructures such as corannulene (C20H10), nanobowls (C40H10), and fullerenes (C60) in deep space. However, the underlying elementary gas- phase processes synthesizing cyclopentadiene from acyclic hydrocarbon precursors have remained elusive. Here, by merging crossed molecular beam experiments with rate coefficient calculations and comprehensive astrochemical modeling, we afford persuasive testimony on an unconventional low- temperature cyclization pathway to cyclopentadiene from acyclic precursors through the reaction of the simplest diatomic organic radical-methylidyne (CH)- with 1,3- butadiene (C4H6) representing main route to cyclopentadiene observed in TaurusMolecular Cloud. This facile route provides potential solution for the incorporation of the cyclopentadiene moiety in complex aromatic systems via bottom-up molecular mass growth processes and offers an entry point to the low- temperature chemistry in deep space leading eventually to nonplanar PAHs in our carbonaceous Universe. |
| WOS关键词 | ACTIVE THERMOCHEMICAL TABLES ; MOLECULAR-BEAM ; HYDROCARBONS ; ENERGY ; IDENTIFICATION ; ISOMERS ; BENZENE ; TMC-1 |
| 资助项目 | U.S. Department of Energy, Basic Energy Sciences[DE-FG02-03ER15411] ; NSF of China[12473025] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2024D01E37] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001385652800006 |
| 出版者 | NATL ACAD SCIENCES |
| 资助机构 | U.S. Department of Energy, Basic Energy Sciences ; NSF of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7346]  |
| 专题 | 天体化学研究团组 |
| 通讯作者 | Li, Xiaohu; Kaiser, Ralf I. |
| 作者单位 | 1.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA 2.Chinese Acad Sci, Key Lab Radio Astron & Technol, Beijing 100101, Peoples R China 3.Samara Natl Res Univ, Lab Combust Phys & Chem, Samara 443086, Russia 4.Univ Hawaii Manoa, Dept Chem, Honolulu, HI 96822 USA 5.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Xinjiang, Peoples R China 6.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Zhenghai,Medvedkov, Iakov A.,Goettl, Shane J.,et al. Low-temperature gas-phase formation of cyclopentadiene and its role in the formation of aromatics in the interstellar medium[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2024,121(51):2409933121. |
| APA | Yang, Zhenghai.,Medvedkov, Iakov A..,Goettl, Shane J..,Nikolayev, Anatoliy A..,Mebel, Alexander M..,...&Kaiser, Ralf I..(2024).Low-temperature gas-phase formation of cyclopentadiene and its role in the formation of aromatics in the interstellar medium.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(51),2409933121. |
| MLA | Yang, Zhenghai,et al."Low-temperature gas-phase formation of cyclopentadiene and its role in the formation of aromatics in the interstellar medium".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.51(2024):2409933121. |
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来源：新疆天文台
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