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  • Inorganic Chemistry  (1)
  • mammalian pheromones
  • 1975-1979  (1)
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    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 447 (1978), S. 215-220 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Pertechnetate with CysteineThe kinetics of reaction of pertechnetate with cysteine and cysteine ethyl ester in acidic solution has been investigated radiochromatographically. Pertechnetate is reduced by thiols forming technetium(V) thiol complexes, in which co-ordination of amino acids to technetium is facilitated by thiol and amino groups. The reaction is first order in each reactant. The second order rate constant increase with increasing acidity of the solution. The rate-determining step in the reaction proved to be the nucleophilic attack of the thiol on the preformed pertechnetium acid.
    Notes: Die Kinetik der Reduktion von Pertechnetat durch Cystein und Cysteinäthylester in saurer wäßriger Lösung wurde untersucht. Die Reaktion verläuft über einen geschwindigkeitsbestimmenden nukleophilen Angriff der Mercaptoverbindung an das im vorgelagerten Gleichgewicht protonierte Pertechnetat und führt zur Bildung eines Tc(V)-Komplexes mit der Mercaptoverbindung.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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