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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 559 (1988), S. 143-148 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thermal Decomposition of K2Ti(O2)F4 · H2O by High Pressure. High Pressure Synthesis of K2TiOF4 · H2O and K2TiOF4Heating K2Ti(O2)F4 · H2O and applicating high pressure (1 - 4 GPa) we obtained two hitherto unknown and otherwise not accessible compounds.K2TiOF4 · H2O cristallizes orthorhombic with the “Tl2AlF5-type” (a = 936,2(3); b = 825,1(3); c = 775,9(3) pm, dc = 2,62 g cm-3, dm = 2,57 g cm-3). The crystal structure shows infinite chains of [TiF4O2/2]2- octahedra, linked by trans-bridging O atoms.K2TiOF4 cristallizes orthorhombic with the K2FeF5-type (a = 2025,3(2); b = 736,6(1); c = 1295,1(1) pm, dc = 3,00 g cm-3, dm = 2,97 g cm-3). The crystal structure shows infinite chains of [TiOF3F2/2]2- octahedra, linked by cis-bridging F-atoms.Vibrational spectra of both compounds as well as the different thermal behaviour of K2Ti(O2)F4 · H2O under normal and high pressure are discussed.
    Notes: Beim Erhitzen von K2Ti(O2)F4 · H2O unter hohem Druck (1 - 4 GPa) entstehen zwei bisher nicht bekannte und auf anderem Wege nicht zugängliche Verbindungen.K2TiOF4 · H2O kristallisiert orthorhombisch im “Tl2AlF5-Typ” mit a = 936,2(3); b = 825,1(3); c = 775,9(3) pm, drö = 2,62 g cm-3, dpyk = 2,57 g cm-3. Die Struktur enthält lineare Ketten von über O-Atome trans-verknüpften [TiF4O2/2]2--Oktaedern.K2TiOF4 kristallisiert orthorhombisch im K2FeF5-Typ mit a = 2025,3(2); b = 736,6(1); c = 1295,1(1) pm, drö = 3,00 g cm-3, dpyk = 2,97 g cm-3. In dieser Struktur liegen gewellte Ketten von über F-Atome cis-verknüpften [TiOF3F2/2]2--Oktaedern vor.Die Schwingungsspektren beider Verbindungen sowie das unterschiedliche thermische Verhalten von K2Ti(O2)F4 · H2O bei Normaldruck und unter hohem Druck werden diskutiert.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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