Počet záznamů: 1  

Does Ionized Diacetylene have a Positive Proton Affinity?

  1. 1.
    0181818 - UFCH-W 20030260 RIV NL eng J - Článek v odborném periodiku
    Schröder, D. - Loos, J. - Schwarz, H. - Thissen, R. - Roithová, Jana - Herman, Zdeněk
    Does Ionized Diacetylene have a Positive Proton Affinity?
    International Journal of Mass Spectrometry. Roč. 230, - (2003), s. 113-121. ISSN 1387-3806. E-ISSN 1873-2798
    Grant CEP: GA AV ČR KJB4040302
    Výzkumný záměr: CEZ:AV0Z4040901
    Klíčová slova: charge reversal * charge stripping * density functional theory
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.361, rok: 2003

    Singly and doubly-charged C4H3+/2+ ions generated upon electron ionization (EI) of the neutral precursors 1,3-butadiene, benzene, and exo-methylene cyclopropane, respectively, are examined by sector-field mass-spectrometry. Charge stripping of the mass-selected monocations affords the corresponding dications and charge exchange of the C4H3 2+ dications allows for the reverse redox process. Refined analysis and additional MS/MS studies suggest that the monocations are mixtures of isomeric ions formed upon ionization, whereas only a single type of dication seems to be formed. As an average of energy-resolved measurements, a vertical ionization energy of IEv(C4H3+) = 17.0 _ 0.5eV is derived. In adition to the experimental work, density functional theory is used for a computational exploration of the mono and dicationic species.
    Trvalý link: http://hdl.handle.net/11104/0078336

     
     

Počet záznamů: 1  

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