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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 470 (1980), S. 177-183 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Coordination Ability and Extraction Behaviour of 1-Dialkyl-3-thiobenzoyl UreasA series of new 1-dialkyl-3-thiobenzoyl ureas was synthesized and the extraction ability for lead and zinc was studied. To characterize this type of ligands metal chelates of 1-diethyl-3-thiobenzoyl urea with Co, Ni, Cu, Zn, Pb, and Pd were isolated. The acid constant of the ligand and the stability constants for the complexes of Co, Ni, Zn, Cd, and Ag were determined in 75% (v) dioxane-water mixture. 1-Dialkyl-3-thiobenzoyl ureas are more acid and in general form less stable complexes than the isomeric 1-dialkyl-3-benzoyl thioureas do, but they are able to extract metals from somewhat stronger solutions.
    Notes: Eine Reihe neuer 1-Dialkyl-3-thiobenzoylharnstoffe wurde synthetisiert und ihr Extraktionsvermögen gegenüber Blei und Zink untersucht. Zur komplexchemischen Charakterisierung des Ligandentyps wurden für 1-Diethyl-3-thiobenzoylharnstoff die Metallchelate von Co, Ni, Cu, Zn, Pb und Pd dargestellt sowie auf potentiometrischem Wege in 75 Vol-% Dioxan-Wasser-Mischung die Säurekonstante des Liganden und die Komplexstabilitätskonstanten für Co, Ni, Zn, Cd und Ag bestimmt. 1-Dialkyl-3-thiobenzoyl-harnstoffe sind stärker sauer und bilden allgemein weniger stabile Komplexe als die isomeren 1-Dialkyl-3-benzoyl-thioharnstoffe, extrahieren aber Metalle aus stärker sauren Lösungen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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