High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth.
High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth.
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DOI:
10.1038/s41598-017-06489-1
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发表时间:
2017-07-24
影响因子:
4.6
通讯作者:
Civiš S
中科院分区:
文献类型:
--
作者:
Ferus M;Kubelík P;Knížek A;Pastorek A;Sutherland J;Civiš S
Recent results in prebiotic chemistry implicate hydrogen cyanide (HCN) as the source of carbon and nitrogen for the synthesis of nucleotide, amino acid and lipid building blocks. HCN can be produced during impact events by reprocessing of carbonaceous and nitrogenous materials from both the impactor and the atmosphere; it can also be produced from these materials by electrical discharge. Here we investigate the effect of high energy events on a range of starting mixtures representative of various atmosphere-impactor volatile combinations. Using continuously scanning time–resolved spectrometry, we have detected ·CN radical and excited CO as the initially most abundant products. Cyano radicals and excited carbon monoxide molecules in particular are reactive, energy-rich species, but are resilient owing to favourable Franck–Condon factors. The subsequent reactions of these first formed excited species lead to the production of ground-state prebiotic building blocks, principally HCN.
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影响因子:
3.2
作者:
de Niem, D.;Kuehrt, E.;Motschmann, U.
通讯作者:
Motschmann, U.
DOI:
10.1073/pnas.1412072111
发表时间:
2015-01-20
影响因子:
11.1
作者:
Ferus, Martin;Nesvorny, David;Civis, Svatopluk
通讯作者:
Civis, Svatopluk
影响因子:
6.5
作者:
Civis, S.;Ferus, M.;Zanozina, E. M.
通讯作者:
Zanozina, E. M.
影响因子:
6.5
作者:
Civis, S.;Ferus, M.;Chernov, V. E.
通讯作者:
Chernov, V. E.
影响因子:
2.9
作者:
Civis, Svatopluk;Kubelik, Petr;Ferus, Martin
通讯作者:
Ferus, Martin