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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: mehrkernige Technetium-Cluster. I. Synthese, Kristall- und Molekularstruktur der Bromide achtkerniger prismatischer und sechskerniger oktaedrischer Cluster des TechnetiumsE werden die Synthese, Kristall- und Molekularstruktur erster Vertreter mehrkerniger Technetium-Cluster er Zusammensetzung: [Tc8Br4μ—Br8]Br. 2 H2O; [H(H2O)2][Tc8Br4μ—Br8]Br; [H(H2O)2]2[Tc8Br4μ—Br8]Br2; [H3O(H2O)3]2[Tc6Br6μ3—Br5]; [(C4H9)4N]2[Tc6Br6μ3—Br5]; [H3O(H2O)3]2[Tc6Br6μ3—Br5]. 4 H2O beschrieben. Diese Verbindungen unterscheiden sich in ihrem Bau wesentlich von bekannten Clustern anderer d-Elemente. Die Kristall- und Molekularstruktur von Hexabromotechnetiumsäure, (H3O)2TcBr6, ist untersucht worden.
    Notes: The synthesis, crystal and molecular structure of the first representatives of polynuclear technetium clusters are described. The composition of these clusters is: [Tc8Br4μ—Br8]Br. 2H2O; [H(H2O)2][Tc8Br4μ—Br8]Br; [H(H2O)2]2[Tc8Br4μ—Br8]Br2; [H3O(H2O)3]2[Tc6Br6μ3—Br5]; [(C4H9)4N]2[Tc6Br6μ3—Br5]; [H3O3]2[Tc6Br6μ3—Br5]. 4 H2O. It is shown that these clusters strongly differ in their structure from the known clusters of other d-elements. The crystal and molecular structure of hexabromotechetium acid (H3O)2TcBr6 is studied too.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 563 (1988), S. 153-166 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Mehrkernige Technetium-Cluster. II. Physikalisch-chemische Eigenschaften der Bromide achtkerniger prismatischer und sechskerniger oktaedrischer Cluster des TechnetiumsEs wurden thermische Beständigkeit, IR- und ESR-Spektren, magnetische Eigenschaften, Elektronenbau und Bildungsmechanismus achtkerniger prismatischer ([Tc8Br4μ—Br8]Br. 2 H2O (I); [H(H2O)2][Tc8Br5μ—Br8]Br (II); [H(H2O)2]2[Tc8Br4μ—Br8]Br2 (III)) und sechskerniger oktaedrischer ([H3O(H2O)3]2[Tc6Br6μ3—Br5] (IV); [(C4H9)4N]2[Tc6Br6μ3—Br5] (V); [H3O(H2O)3]2[Tc6μ3—Br5]. 4H2O(VI)) Bromid-Cluster, und auch der Hexabromotechnetium(IV)-Säure untersucht, deren Synthese, Kristall- und Molekularstruktur in voriger Arbeit [1] beschrieben sind. Die Verbindungen (I-VI) unterscheiden sich in ihren physikalisch-chemischen Eigenschaften wesentlich von bekannten Clustern anderer Elemente.
    Notes: The thermal stability, IR- and ESR spectra, magnetic properties, electronic structure and the mechanism of the formation of the bromide octanuclear prismatic [Tc8Br4μ—Br8]Br. 2 H2O (I); [H(H2O)2][Tc8Br4μ—Br8]Br (II), [H(H2O)2]2[Tc8Br4μ—Br8]Br2 (III) and hexanuclear octahedral ([H3O(H2O)3]2[Tc6Br6μ3-—Br5] (IV); [C4H9)4N]2[Tc6Br6μ3—Br5 (V); H3O(H2O)3]2[Tc6Br6μ3—Br5]. 4 H2O (VI)) clusters and also of hexabromotechnetium (IV) acid ((H3O)2[TcBr6] (VII) have been studied. Synthesis, crystal and molecular structure of these compounds is described in the previous work [1]. It has been shown that compounds (I)-(VI) greatly differ in their physico-chemical properties from the known clusters of other elements.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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