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Träfflista för sökning "WFRF:(Thissen R.) srt2:(2020-2021)"

Sökning: WFRF:(Thissen R.) > (2020-2021)

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1.
  • Richardson, V., et al. (författare)
  • The reactivity of methanimine radical cation (H2CNH.+) and its isomer aminomethylene (HCNH2.+) with methane
  • 2021
  • Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614 .- 1873-4448. ; 775
  • Tidskriftsartikel (refereegranskat)abstract
    • Experimental and theoretical studies are presented on the reactions of the isomeric radical cations H2CNH+ and HCNH2+ with CH4. Ionic isomers were generated selectively by VUV dissociative photoionization of azetidine and cyclopropylamine precursors respectively. Both exclusively give H2CNH2+ plus CH3 as products, but differences are observed related to a competition between stripping and complex-mediated H-transfer. Astrochemical implications for Titan’s atmosphere are briefly discussed, where the presence of methanimine (H2CNH), a key prebiotic molecule and a potential precursor for tholins, is proposed on the basis of atmospheric models and the observation of CH2NH2+ ions in Cassini mass spectrometric data.
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2.
  • Sundelin, David, et al. (författare)
  • The reactivity of methanimine radical cation (H2CNH•+) and its isomer aminomethylene (HCNH2•+) with C2H4
  • 2021
  • Ingår i: Chemical Physics Letters. - : Elsevier BV. - 0009-2614 .- 1873-4448. ; 777
  • Tidskriftsartikel (refereegranskat)abstract
    • Experimental and theoretical studies are presented on the reactivity of H2CNH'+ (methanimine) and HCNH2'+ (aminomethylene) with ethene (C2H4). Selective isomer generation is performed via dissociative photoionization of suitable neutral precursors and reactive cross sections and branching ratios are measured as a function of photon and collision energies. Differences between isomers' reactivity are discussed in light of ab-initio calculations on reaction mechanisms. The main products, for both isomers, are H-elimination, most likely occurring from covalently bound adducts (giving c-CH2CH2CHNH+/CH2NHCHCH2+) and H' atom transfer to yield H2CNH2+. The astrochemical implications of the results are briefly addressed.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
Författare/redaktör
Geppert, Wolf (2)
Thissen, R. (2)
Polasek, M. (2)
Tosi, P (2)
Ascenzi, D. (2)
Richardson, V (2)
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Sundelin, David (2)
Alcaraz, C. (2)
Romanzin, C. (2)
Žabka, J. (2)
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Stockholms universitet (2)
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Engelska (2)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (2)
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2021 (2)

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