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  • 1
    Publication Date: 1983-11-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 2
    Publication Date: 1988-04-01
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 3
    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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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 506 (1983), S. 169-177 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal Structure and Spectroscopic Data of Rb2[VOF4(H2O)]Blue crystals of Rb2[VOF4(H2O)] have been obtained from hydrofluoric acid. The crystal structure (space group Cmcm, a = 969.6(4), b = 780.6(2), c = 835.4(4) pm, Z = 4, dc = 3.486 gcm-3, dm = 3.41 gcm-3, Rw = 0.032 for 411 independent reflections) shows isolated [VOF4(H2O)]2- anions  -  with H2O in trans-position to the relatively long V—O bond (d(V—O) = 166.8(7) pm)  -  which are connected with each other by hydrogen bonds forming infinite chains. The blue colour of the compound despite of the isotypism to the “green” modification of Cs2[VOF4(H2O)] is discussed on the basis of the structural data, i.r./Raman and u.v./vis reflection spectra. The magnetic moment is 1.72 B.M. at 295 K.
    Notes: Blaue Kristalle von Rb2[VOF4(H2O)] wurden aus flußsaurer Lösung erhalten. Ihre Kristallstruktur (Raumgruppe Cmcm, a = 969,6(4), b = 780,6(2), c = 835,4(4) pm, Z = 4, dc = 3,486 gcm-3, dm = 3,41 gcm-3, Rw = 0,032 für 411 unabhängige Reflexe) weist isolierte [VOF4(H2O)]2--Anionen auf mit H2O in trans-Stellung zur relativ langen V—O-Bindung (d(V—O) = 166,8(7) pm), die über Wasserstoffbrückenbindungen zu unendlichen Ketten miteinander verknüpft sind. Die trotz Isotypie mit der „grünen“ Modifikation von Cs2[VOF4(H2O)] blaue Farbe wird auf der Basis der Strukturdaten sowie der IR/Raman- und UV/VIS-Reflexionsspektren diskutiert. Das magnetische Moment beträgt bei 295 K 1,72 B.M.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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