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  • 1
    Publication Date: 1987-01-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 544 (1987), S. 122-126 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Oxidefluorides of Niobium and TantalumThe reaction of NbF5 with SiO2 (silica glass ampules) at 310°C or with SiO2 (Aerosil) at 180°C always leads to NbO2F. To the contrary the reaction with laboratory glass (Jenaer Geräteglas) at 130°C leads to NbOF3.TaF5 reacts in silica glass ampules at 400°C by formation of TaO2F, however at 300°C or 260°C by formation of TaOF3.Silica glass did not react with NbF5 at 130°C, however Nb2O5 and NbF5 gave at 130°C in silica glass ampoules NbOF3. Similarly, TaF5 and Ta2O5 or TaO2F formed at 260°C in nickel ampoules TaOF3. The chemical and the thermochemical behaviour of oxidefluorides have been investigated.The compounds NbOF3 and TaOF3 are isomorphic. Lattice constants are mentioned.
    Notes: Die Reaktion von NbF5 mit SiO2 (Quarzglasampullen) bei 310°C oder mit SiO2 (Aerosil) bei 180°C führte stets zu NbO2F. Dagegen reagierte NbF5 mit Jenaer Geräteglasampullen bei 130°C zu NbOF3. TaF5 reagierte mit Quarzglasampullen bei 400°C unter Bildung von TaO2F, bei 300 oder 260°C jedoch unter Bildung von TaOF3.Quarzglas reagierte bei 130°C nicht mit NbF5, jedoch gaben Nb2O5 und NbF5 bei 130°C in Quarzglasampullen NbOF3. Analog bildeten TaF5 mit Ta2O5 oder TaO2F bei 260°C in Nickelampullen TaOF3.Das chemische und thermische Verhalten der Oxidfluoride wurde untersucht.Die Verbindungen NbOF3 und TaOF3 sind isomorph. Gitterkonstanten werden angegeben.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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