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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 187-191 
    ISSN: 0009-2940
    Keywords: Benzyl radicals ; Dithiocarboxylates, sterically hindered ; Radical anions ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of Persistent Benzyl Radicals by Protonation of the Radical Anions of Sterically Hindered Dithiobenzoic EstersESR signals due to a second species are observed besides the spectra of the corresponding radical anions when the methyl ortho-(tert-butyl)dithiobenzoates 1, 4, and 6 are electroreduced in situ in dimethylformamide. It is shown by investigation of model compounds as well as semiempirical MNDO/CI-MO calculations, that these arise from α-alkylthio-α-mercaptobenzyl radicals 3, 14, and 15 which are formed by protonation of the radical anions at the thiocarbonyl sulfur atom.
    Notes: Nach in-situ-Elektroreduktion der ortho-(tert-Butyl)dithiobenzoesäure-methylester 1, 4 und 6 in Dimethylformamid beobachteten wir neben den ESR-Spektren der entsprechenden Radikalanionen die Signale einer zweiten Spezies. Durch Untersuchung von Modellverbindungen sowie semiempirische MO-Rechnungen nach dem MNDO/CI-Verfahren wird gezeigt, daß es sich dabei um die α-Alkylthio-α-mercaptobenzyl-Radikale 3, 14 und 15 handelt, die durch Protonierung der Radikalanionen am Thiocarbonylschwefel entstehen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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