Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH<sub>2</sub>CH<sub>2</sub>CN)

doi:10.1093/mnras/stae2000

	Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH₂CH₂CN)
	Zhang, Xia1,2 ; Quan, Donghui1,3 ; Li, Xiaohu1,2,4 ; Esimbek, Jarken1,2,4 ; Li, Fangfang 1; Zhou, Yan 5; Li, Dalei1,2,4
	2024-09-04
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
Volume	533 Issue:3 Pages:3623-3636
Contribution Rank	1
Abstract	Aminoacetonitrile (AAN), also known as glycinenitrile, has been suggested as a possible precursor of glycine and adenine in the interstellar medium. Here we present the chemical modeling of AAN and its isomers in hot cores using the three-phase chemical model NAUTILUS with the addition of over 300 chemical reactions of the three AAN isomers and related species. Our models predicted a peak gas phase abundance of AAN reaching the order of 10(-8), which is consistent with observation towards Sgr B2(N). Regarding the reaction pathways of AAN and its isomers, we found that AAN is primarily formed via free radical reactions on grain surfaces during the early evolutionary stages. Subsequently, it is thermally desorbed into the gas phase as the temperature rises and is then destroyed by positive ions and radicals in gas phase. The isomers of AAN are formed through the hydrogenation reaction of CH3NCN on the grain surface and via electron recombination reactions of ion C2H5N2+ in gas phase. We speculate that there is a possibility for NCCN and AAN to react with each other, eventually leading to the formation of adenine in hot cores. However, further investigation is required to understand the efficiency of grain surfaces in adenine formation, through theoretical calculations or laboratory experiments in future research
Keyword	astrochemistry molecular processes ISM: abundances ISM: molecules
DOI	10.1093/mnras/stae2000
Indexed By	SCI
Language	英语
WOS Keyword	EXPLORING MOLECULAR COMPLEXITY ; COUPLED-CLUSTER SINGLES ; HOT CORES ; ORGANIC-MOLECULES ; AMINO-ACIDS ; CHEMISTRY ; GAS ; PHASE ; ENERGY ; HYDROGENATION
Funding Project	National Natural Science Foundation of China[12203091] ; National Natural Science Foundation of China[12373026] ; National Natural Science Foundation of China[12173075] ; National Natural Science Foundation of China[2022D01A156] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022YFA1603103] ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001305885900011
Publisher	OXFORD UNIV PRESS
Funding Organization	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/6973
Collection	射电天文研究室_天体化学研究团组
Corresponding Author	Zhang, Xia; Quan, Donghui; Li, Xiaohu
Affiliation	1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China 3.Zhejiang Lab, Res Ctr Astron Comp, Hangzhou 311100, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 5.Shandong Univ Aeronaut & Astronaut, Coll Sci, 391 Huanghe 5th Rd, Binzhou City 256600, Shandong, Peoples R China
First Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Corresponding Author Affilication	Xinjiang Astronomical Observatory, Chinese Academy of Sciences
Recommended Citation GB/T 7714	Zhang, Xia,Quan, Donghui,Li, Xiaohu,et al. Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH₂CH₂CN)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,533(3):3623-3636.
APA	Zhang, Xia.,Quan, Donghui.,Li, Xiaohu.,Esimbek, Jarken.,Li, Fangfang.,...&Li, Dalei.(2024).Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH₂CH₂CN).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,533(3),3623-3636.
MLA	Zhang, Xia,et al."Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH₂CH₂CN)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 533.3(2024):3623-3636.

Files in This Item:
File Name/Size	DocType	Version	Access	License
Zhang-2024-Chemical （1795KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	View Application Full Text

File name:	Zhang-2024-Chemical models of interstellar gly.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

射电天文研究室知识库