Interstellar detection of the highly polar five-membered ring cyanocyclopentadiene

Interstellar detection of the highly polar five-membered ring cyanocyclopentadiene
复制标题

高极性五元环氰基环戊二烯的星际探测

DOI:
10.1038/s41550-020-01213-y
复制
发表时间:
2021
期刊:
影响因子:
14.1
通讯作者:
Willis, Eric R.
Willis, Eric R.
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
McCarthy, Michael C.;Lee, Kin Long;Loomis, Ryan A.;Burkhardt, Andrew M.;Shingledecker, Christopher N.;Charnley, Steven B.;Cordiner, Martin A.;Herbst, Eric;Kalenskii, Sergei;Willis, Eric R.

文献摘要

参考文献

被引文献

相似文献

就像六元环一样,五元环在有机化学中无处不在,经常作为更大分子的构建单元,包括许多生物化学重要性。结合实验室旋转光谱和无线电波段对无星云核TMC-1的灵敏谱线调查,我们报告了1-氰基-1,3-环戊二烯(1-cyano-CPD,c-C5 H5 CN)的天文探测,一种高极性的环戊二烯氰基衍生物。1-cyano-CPD的衍生丰度远远大于天体化学模型的预测,这些模型很好地再现了许多碳链的丰度。这一发现意味着,可能需要考虑一个重要的生产机制或一个大型的芳香族物质储存库。其密切相关的异构体2-氰基-1,3-环戊二烯的明显缺乏可能是由于该异构体的较低稳定性,或者可能表明形成1-氰基异构体的选择性更高的途径,也许是从无环前体开始的途径。根据1-氰基CPD的天文发现,讨论了吡咯和吡啶等N-杂环化合物的不存在。
Much like six-membered rings, five-membered rings are ubiquitous in organic chemistry, frequently serving as the building blocks for larger molecules, including many of biochemical importance. From a combination of laboratory rotational spectroscopy and a sensitive spectral line survey in the radio band toward the starless cloud core TMC-1, we report the astronomical detection of 1-cyano-1,3-cyclopentadiene (1-cyano-CPD, c-C5H5CN), a highly polar, cyano derivative of cyclopentadiene. The derived abundance of 1-cyano-CPD is far greater than predicted from astrochemical models that well reproduce the abundance of many carbon chains. This finding implies that either an important production mechanism or a large reservoir of aromatic material may need to be considered. The apparent absence of its closely related isomer, 2-cyano-1,3-cyclopentadiene, may arise from that isomer’s lower stability or may be indicative of a more selective pathway for formation of the 1-cyano isomer, perhaps one starting from acyclic precursors. The absence of N-heterocycles such as pyrrole and pyridine is discussed in light of the astronomical finding of 1-cyano-CPD.
未检测到 TMC-1 的 HC11N:限制大碳链分子的化学性质
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
R. Loomis;C. Shingledecker;G. Langston;B. McGuire;Niklaus M. Dollhopf;A. Burkhardt;J. Corby;S. Booth;P. B. Carroll;B. Turner;A. Remijan
通讯作者: A. Remijan
1-氰基-1,3-环戊二烯的微波谱和偶极矩
DOI: --
发表时间: 1978
期刊:
影响因子: --
作者:
R. Ford;H. A. Seitzman
通讯作者: H. A. Seitzman
氰基环戊二烯及相关化合物的结构
DOI: --
发表时间: 1970
期刊:
影响因子: --
作者:
C. Wentrup;W. D. Crow
通讯作者: W. D. Crow
DOI: 10.3847/2041-8213/ab7a9c
发表时间: 2020-03-10
影响因子: 7.9
作者:
Cooke, Ilsa R.;Gupta, Divita;Sims, Ian R.
通讯作者: Sims, Ian R.
DOI: --
发表时间: 1956
期刊:
影响因子: --
作者:
V. Laurie
通讯作者: V. Laurie