High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth

Abstract 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...

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Autores principales:	Martin Ferus, Petr Kubelík, Antonín Knížek, Adam Pastorek, John Sutherland, Svatopluk Civiš
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/75bf075ea3e5428b9866e9f85c9f25b5
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spelling	oai:doaj.org-article:75bf075ea3e5428b9866e9f85c9f25b52021-12-02T11:40:22ZHigh Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth10.1038/s41598-017-06489-12045-2322https://doaj.org/article/75bf075ea3e5428b9866e9f85c9f25b52017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06489-1https://doaj.org/toc/2045-2322Abstract 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.Martin FerusPetr KubelíkAntonín KnížekAdam PastorekJohn SutherlandSvatopluk CivišNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Martin Ferus Petr Kubelík Antonín Knížek Adam Pastorek John Sutherland Svatopluk Civiš High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
description	Abstract 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.
format	article
author	Martin Ferus Petr Kubelík Antonín Knížek Adam Pastorek John Sutherland Svatopluk Civiš
author_facet	Martin Ferus Petr Kubelík Antonín Knížek Adam Pastorek John Sutherland Svatopluk Civiš
author_sort	Martin Ferus
title	High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
title_short	High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
title_full	High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
title_fullStr	High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
title_full_unstemmed	High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth
title_sort	high energy radical chemistry formation of hcn-rich atmospheres on early earth
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/75bf075ea3e5428b9866e9f85c9f25b5
work_keys_str_mv	AT martinferus highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth AT petrkubelik highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth AT antoninknizek highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth AT adampastorek highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth AT johnsutherland highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth AT svatoplukcivis highenergyradicalchemistryformationofhcnrichatmospheresonearlyearth
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High Energy Radical Chemistry Formation of HCN-rich Atmospheres on early Earth

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