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  • 1970-1974  (2)
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Publisher
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 6 (1974), S. 299-304 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a étudié la décomposition thermique de Hg(CN)2, K2Hg(CN)4, KHg(CN)2Cl · · H2O, KHg(CN)2Br et KHg(CN)2I. Les résultats ont montré que chacun des complexes étudiés se décompose à une température inférieure à celle de Hg(CN)2 lui-même. Les complexes contenant des halogènes se décomposent suivant deux voies. Avec KHg(CN)2Cl · H2O c'est la liaison Hg-CN qui est rompue la première et il se forme Hg2Cl2(CN)2 et KCN. Avec KHg(CN)2Br et KHg(CN)2I, la première étape de la décomposition est celle de Hg(CN)2 et de KBr ou Kl.
    Abstract: Zusammenfassung Die thermische Zersetzung von Hg(CN)2, K2Hg(CN)4, KHg(CN)2Cl · · H2O, KHg(CN)2Br und KHg(CN)2I wurde studiert. Die Ergebnisse zeigten, daß jede der untersuchten Komplexverbindungen bei niedrigeren Temperaturen zersetzt wird, als Hg(CN)2 selbst. Die halogenhaltigen Komplexe werden auf zweierlei Arten zersetzt. Im KHg(CN)2Cl · · H2O wird zuerst die Bindung Hg-CN gespalten, wobei Hg2Cl2, (CN)2 und KCN entstehen. Andererseits ist die erste Zersetzungsstufe bei KHg(CN)2Br und KHg(CN)2I die Zersetzung zu Hg(CN)2 und KBr bzw. KI.
    Notes: Abstract The thermal decompositions of Hg(CN)2, K2Hg(CN)4, KHg(CN)2Cl · H2O KHg(CN)2Br and KHg(CN)2I were studied. The results showed that each of the studied complexes decomposes at a lower temperature than Hg(CN)2 itself. The halogen-containing complexes decompose in two ways. In KHg(CN)2Cl · H2O the Hg-CN bond is first broken, and then Hg2Cl2, (CN)2 and KCN are formed. The first step in the decomposition of KHg(CN)2Br and KHg(CN)2I, on the other hand, is the decomposition to Hg(CN)2 and KBr or KI.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 1 (1974), S. 125-128 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Кинетика ооразования смешанного комплекса цианисто-бромистой ртути (ІІ) была изучена спектрофотометрически при 25°C, в смеси диоксан-вода с различным составом. Реакция может быть описана уравнением скорости простого обратимого процесса второго порядка. Константы скорости обеих — прямой и обратной — реакций изменяются периодически в зависимости от состава смеси растворителей, в то время как константа равновесия реакции не изменяется значительно. Такое необычное поведение констант скоростей является результатом селективной сольватации реактантов.
    Notes: Abstract The kinetics of formation of the mercury/II/-cyanide-bromide mixed ligand complex have been studied spectrophotometrically at 25°C, in dioxan-water mixtures of different compositions. The reaction can be described by the rate equation of a simple second-order reversible process. The rate constants of both the forward and reverse reaction vary periodically with the solvent composition, whereas the equilibrium constant of the reaction does not change to a large extent. The unusual behaviour of the rate constants is due to selective solvation of the reactants.
    Type of Medium: Electronic Resource
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