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Electron capture negative ion mass spectra of some freon derivatives

Treść / Zawartość
Identyfikatory
Warianty tytułu
Konferencja
Proceedings of the Low Energy Electron-Molecule Interactions - 2nd International Symposium, August 29th - September 2nd, 2002, Chlewiska/Siedlce, Poland
Języki publikacji
EN
Abstrakty
EN
The temperature dependence of dissociative attachment has been investigated in the temperature range 350-575 K for two freon derivatives 1,1,1-C2H3F2Cl and C2F5Cl using Electron Capture Negative Ion Mass Spectra (ECNI MS). The temperature dependence for 1,1,1-C2H3F2Cl is similar to that observed in the case of CF3Cl reported by Illenberger et al. In contrast, C2F5Cl exhibits quite a different spectrum and its temperature behavior. It has been suggested that sigma*C-Cl delocalization onto two empty orbital leads to Cl- ion formation in two different resonance states.
Słowa kluczowe
Czasopismo
Rocznik
Strony
83--88
Opis fizyczny
Bibliogr. 20 poz., rys.
Twórcy
  • Institute of Physics of Molecules and Crystals, Russian Academy of Science, 151 October Pr., Ufa, 450075 Russia, Tel.: +7 3472/ 31 19 95, Fax: +7 3472/ 31 35 38
  • Institute of Physics of Molecules and Crystals, Russian Academy of Science, 151 October Pr., Ufa, 450075 Russia, Tel.: +7 3472/ 31 19 95, Fax: +7 3472/ 31 35 38
autor
  • Institute of Physics of Molecules and Crystals, Russian Academy of Science, 151 October Pr., Ufa, 450075 Russia, Tel.: +7 3472/ 31 19 95, Fax: +7 3472/ 31 35 38
autor
  • Chemistry Department, University of Podlasie, 3 Maja Str. 54, 08-110 Siedlce, Poland
autor
  • Chemistry Department, University of Podlasie, 3 Maja Str. 54, 08-110 Siedlce, Poland
  • Chemistry Department, University of Podlasie, 3 Maja Str. 54, 08-110 Siedlce, Poland
Bibliografia
  • 1. Asfandiarov NL, Fal’ko VS, Lukin VG et al. (2001) Violation of frozen shell approximation in dissociative electron capture by halogenated anthraquinones. Rapid Commun Mass Spectrom 15:1869−1878
  • 2. Christophorou LG (ed.) (1994) Electron−molecule interactions and their applications, Vols 1−2. Academic Press, New York
  • 3. Chutjian A, Alajian SH (1985) s-Wave threshold in electron attachment: observations and cross sections in CCl4 and SF6 at ultra low electron energies. Phys Rev A 31:2885−2892
  • 4. Elyashevich MA (2001) Atomic and molecular spectroscopy. Editorial URSS, Moscow
  • 5. Fabrikant II, Hotop H (2001) Low-energy behavior of exothermic dissociative electron attachment. Phys Rev A 63:022706−1−022706−10
  • 6. Hahndorf I, Illenberger E, Lehr L, Manz J (1994) Temperature effects of dissociative electron attachment to CF3Cl. Chem Phys Lett 231:460−466
  • 7. Illenberger E, Scheunemann HU, Baumgärtel H (1979) Negative ion formation in CF2Cl2, CF3Cl and CFCl3 following low-energy (0−10 eV) impact with near monoenergetic electrons. Chem Phys 37:21−31
  • 8. Illenberger E, Smirnov BM (1998) Electron attachment to gas and condensed phase molecules. Usp Fiz Nauk 168:731−766 (in Russian)
  • 9. Khvostenko VI (1981) Negative ion mass spectrometry in organic chemistry. Nauka, Moscow
  • 10. Khvostenko VI, Rafikov SR (1975) Basic rules of negative ion formation in dissociative electron attachment by polyatomic molecule. Dokl Akad Nauk 220:892−894 (in Russian)
  • 11. Lehr L, Manz J, Miller WH (1997) A classical approach to resonant low-energy electron scattering off molecules: application to the a1-shape resonance of CF3Cl. Chem Phys 214:301−312
  • 12. Lehr L, Miller WH (1996) A classical approach to dissociative electron attachment DA: application to temperaturę effects in the DA cross section of CF3Cl. Chem Phys Lett 250:515−522
  • 13. Nafikova EP, Asfandiarov NL, Fokin AI, Lomakin GS (2002) Application of the united atom model for estimating the lifetime of negative molecular ions relative to electron autodetachment. J Exp Theor Phys 95:605−610
  • 14. Nafikova EP, Fal’ko VS, Fokin AI, Lomakin GS, Lukin VG, Pshenichnyuk SA, Asfandiarov NL (2001) Modeling of shape resonance electron scattering by molecules. In: Int Symp on Electron−Molecule Collisions and Swarms, 14−16 July 2001, Lincoln, USA, pp 170−171
  • 15. Pearl DM, Burrow PD (1994) Dissociative attachment in selected monochloroalkanes. J Chem Phys 101:2940−2947
  • 16. Pearl DM, Burrow PD, Fabrikant II, Gallup GA (1995 ). Dissociative attachment in hot CH3Cl: experiment and theory. J Chem Phys 102:2737−2743
  • 17. Rosa A, Barszczewska W, Nandi D et al. (2001) Unusual temperature dependence in dissociative electron attachment to 1,4-chlorobromobenzene. Chem Phys Lett 342:536−544
  • 18. Sullivan SA, Beauchamp JL (1976) NIST Chemistry WebBook. http://webbook.nist.gov/chemistry/
  • 19. Sunagawa T, Shimamori H (2001) Temperature dependence of low-energy electron attachment to CHCl3. Int J Mass Spectrom 205:285−291
  • 20. Wilde RS, Gallup GA, Fabrikant II (1999) Semiempirical R-matrix theory of low energy electron-CF3Cl inelastic scattering. J Phys B: At Mol Opt Phys 32:663−673
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ5-0004-0016
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