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Low-temperature formation of pyridine and (iso)quinoline via neutral-neutral reactions

文献类型：期刊论文

作者Yang, Zhenghai3; He, Chao3; Goettl, Shane J.3; Mebel, Alexander M.7; Velloso, Paulo F. G.2; Alves, Marcio O.2; Galvao, Breno R. L.2; Loison, Jean-Christophe1; Hickson, Kevin M.1; Dobrijevic, Michel6
刊名NATURE ASTRONOMY
出版日期2024-05-13
页码13
ISSN号2397-3366
DOI10.1038/s41550-024-02267-y
产权排序6
英文摘要Aromatic molecules represent fundamental building blocks in prebiotic chemistry and are contemplated as vital precursors to DNA and RNA nitrogen bases. However, despite the identification of some 300 molecules in extraterrestrial environments, the pathways to pyridine (C5H5N), pyridinyl (C5H4N) and (iso)quinoline (C9H7N)-the simplest representative mono- and bicyclic aromatic molecules carrying nitrogen-are elusive. Here we afford compelling evidence on the gas-phase formation of methylene amidogen (H2CN) and cyanomethyl (H2CCN) radicals via molecular beam studies and electronic structure calculations. The modelling of the chemistries of the Taurus molecular cloud (TMC-1) and Titan's atmosphere contemplates a complex chain of reactions synthesizing pyridine, pyridinyl and (iso)quinoline from H2CN and H2CCN at levels of up to 75%. This study affords unique entry points to precursors of DNA and RNA nitrogen bases in hydrocarbon-rich extraterrestrial environments thus changing the way we think about the origin of prebiotic molecules in our Galaxy. A pathway towards the formation of pyridine and (iso)quinoline, precursors to DNA and RNA, is revealed for conditions appropriate to Saturn's moon Titan and the Taurus molecular cloud, providing insight into the synthesis of prebiotic molecules in space.
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; ATMOSPHERE ; CHEMISTRY ; BENZENE ; TITAN ; IDENTIFICATION ; NUCLEOBASES ; MOLECULES ; DENSITY ; ATOMS
资助项目US Department of Energy, Basic Energy Sciences[DE-FG02-03ER15411] ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)[311508/2021-9] ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)[405524/2021-8]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001220931600001
出版者NATURE PORTFOLIO
资助机构US Department of Energy, Basic Energy Sciences ; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
源URL[http://ir.xao.ac.cn/handle/45760611-7/6714]  
专题天体化学研究团组
通讯作者Mebel, Alexander M.; Galvao, Breno R. L.; Loison, Jean-Christophe; Li, Xiaohu; Kaiser, Ralf I.
作者单位1.Univ Bordeaux, Inst Sci Mol, CNRS, Talence, France
2.Ctr Fed Educ Tecnol Minas Gerais, CEFET MG, Belo Horizonte, Brazil
3.Univ Hawaii Manoa, Dept Chem, Honolulu, HI 96822 USA
4.Chinese Acad Sci, Key Lab Radio Astron, Urumqi, Peoples R China
5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China
6.Univ Bordeaux, Lab Astrophys Bordeaux, CNRS, Pessac, France
7.Florida Int Univ, Dept Chem & Biochem, Miami, FL 33199 USA
推荐引用方式
GB/T 7714		 Yang, Zhenghai,He, Chao,Goettl, Shane J.,et al. Low-temperature formation of pyridine and (iso)quinoline via neutral-neutral reactions[J]. NATURE ASTRONOMY,2024:13.
APA Yang, Zhenghai.,He, Chao.,Goettl, Shane J..,Mebel, Alexander M..,Velloso, Paulo F. G..,...&Kaiser, Ralf I..(2024).Low-temperature formation of pyridine and (iso)quinoline via neutral-neutral reactions.NATURE ASTRONOMY,13.
MLA Yang, Zhenghai,et al."Low-temperature formation of pyridine and (iso)quinoline via neutral-neutral reactions".NATURE ASTRONOMY (2024):13.

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来源：新疆天文台

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