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  • Artikel: DFG Deutsche Nationallizenzen  (2)
  • radical addition  (2)
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  • Artikel: DFG Deutsche Nationallizenzen  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    Electronegativity scheme for reactions involving radical addition to vinyl monomers (1992)
    Springer
    Russian chemical bulletin 41 (1992), S. 1750-1755 
    Details
    ISSN: 1573-9171
    Schlagwort(e): vinyl monomers ; radical addition ; reactivity ; correlation schemes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The concept of the apparent electronegativity of a reaction site has been introduced. This has been used to develop a new scheme for calculating the relative rate constants of addition of radicals with different structures to vinyl monomers. The parameters of the scheme are given for 40 reagents. The results of a comparison of calculated and literature rate constants of addition are presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00863803
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Transition states in the reaction of radical addition to the vinyl double bond (1993)
    Springer
    Russian chemical bulletin 42 (1993), S. 640-644 
    Details
    ISSN: 1573-9171
    Schlagwort(e): vinyl monomers ; radical addition ; MO calculations ; transition states of reaction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The transition states for the addition of.CH3, CH3O.,.CCl3,.CF3, and HOO. radicals to the Cβ and Cα atoms of ethylene, propylene, styrerie, acrylonitrile, methyl acrylate, vinyl acetate, and vinyl- and vinylidene chlorides were calculated using the MNDO method. A satisfactory correlation between the heats of reaction and activation energies was found. The calculated coefficients of proportionality, 0.4–0.5, are twice as high as those in the Polyani—Semenov equation. The calculated heat of reaction of radical addition was shown to be as «strong» an index of reactivity as the calculated activation barrier.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00703996
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
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