Interstellar detection of the highly polar five-membered ring cyanocyclopentadiene
Interstellar detection of the highly polar five-membered ring cyanocyclopentadiene
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高极性五元环氰基环戊二烯的星际探测
DOI:
10.1038/s41550-020-01213-y
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发表时间:
2021
期刊:
影响因子:
14.1
通讯作者:
Willis, Eric R.
中科院分区:
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.
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.
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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
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
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
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