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  • 1
    ISSN: 0044-2313
    Keywords: Copper, nickel complexes of N-acyl-thiourea derivatives ; acid dissociation constants ; complex stability constants ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Hydrophilic Substituted N-Acyl-thioureas  -  Acidity and Stability of Complexes in Dioxane/Water MixturesSome derivatives of N-acyl-thioureas containing hydroxy, ester or sulfonic acid groups as well as their copper(II) and nickel(II) complexes have been synthesized. Acid dissociation constants and complex stability constants have been measured pH-potentiometrically in dioxane/water mixtures ranging from 75 to 0% (v/v) dioxane involving main group and subgroup metal ions as well. The partially remarkable changes of the constants in varied solvent mixtures are discussed.
    Notes: Eine Reihe N-Acyl-thioharnstoffe mit Hydroxy-, Ester- oder Sulfonsäuregruppen und ihre Kupfer(II)- und Nickel(II)-Komplexe wurden erstmals synthetisiert und ihre Säuredissoziationskonstanten pH-potentiometrisch in Dioxan/Wassergemischen (Dioxangehalt 75 - 0 Vol.-%) bestimmt. Die Stabilitätskonstanten der Komplexe mit 1-, 2- und 3-wertigen Metallionen aus Haupt- und Nebengruppen des PSE wurden ebenfalls ermittelt. Die z. T. drastischen Veränderungen der Konstanten bei Variation der Lösungsmittelzusammensetzung werden diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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