Is the Reaction of C3N- with C2H2 a Possible Process for Chain Elongation in Titan's Ionosphere?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F16%3A00467079" target="_blank" >RIV/61388955:_____/16:00467079 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1021/acs.jpca.6b01746" target="_blank" >http://dx.doi.org/10.1021/acs.jpca.6b01746</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpca.6b01746" target="_blank" >10.1021/acs.jpca.6b01746</a>

Result language

angličtina

Original language name

Is the Reaction of C3N- with C2H2 a Possible Process for Chain Elongation in Titan's Ionosphere?

Original language description

The reaction of C3N- with acetylene was studied using three different experimental setups, a triple quadrupole mass spectrometer (Trento), a tandem quadrupole mass spectrometer (Prague), and the "CERISES" guided ion beam apparatus at Orsay. The process is of astrophysical interest because it can function as a chain elongation mechanism to produce larger anions that have been detected in Titan's ionosphere by the Cassini Plasma Spectrometer. Three major products of primary processes, C2H-, CN-, and C5N-, have been identified, whereby the production of the cyanide anion is probably partly due to collisional induced dissociation. The formations of all these products show considerable reaction thresholds and also display comparatively small cross sections. Also, no strong signals of anionic products for collision energies lower than 1 eV have been observed. Ab initio calculations have been performed to identify possible pathways leading to the observed products of the title reaction and to elucidate the thermodynamics of these processes. Although the productions of CN- and C5N- are exoergic, all reaction pathways have considerable barriers. Overall, the results of these computations are in agreement with the observed reaction thresholds. Due to the existence of considerable reaction enenrgy barriers and the small observed cross sections, the title reaction is not very likely to play major role in the buildup of large anions in cold environments like the interstellar medium or planetary and satellite ionospheres.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physical Chemistry A

ISSN

1089-5639

e-ISSN

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Volume of the periodical

120

Issue of the periodical within the volume

27

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

5337-5347

UT code for WoS article

000379988900083

EID of the result in the Scopus database

2-s2.0-84978745571