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  • 1965-1969  (1)
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    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 348 (1966), S. 246-256 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Li2SnO3 exists in two modifications: the α-form below 800°C belonging to the space group C2h3 = C2/m or D33 = C3112 or to the enanthiomorphous D35 = C3212; and the β-form, stable above 1000°C, monoclinic in C2h6 = C2/c. These structures are different stacking modes of honey-combed Sn layers in octahedral sites. Na2SnO3, Na2ZrO3 and Li2MnO3 as well as the new compounds Na2TbO3 and Na2HfO3 show diagrams of the α-form. Li4MgReC6 crystallizes in a similar structure with alternating Mg2+ and Re6+ substituting Sn4+. Similar considerations can be applied to Li5JO6, Li5OsO6, Li5ReO6 and Li5TcO6. For α-Li3ReO4 and Li6MgRe2O9 symmetric cation stackings are proposed. A table of the hitherto known compounds being isotypic with Li2SnO3 is given.
    Notes: Li2SnO3 tritt in zwei Modifikationen auf, einer α-Form unterhalb 800°C, welche zu den Raumgruppen C2h3 = C2/m oder D33 = C3112 oder der enantiomorphen D35 = C3212 gehört, und einer oberhalb 1000°C stabilen β-Form in C2h6 = C2/c. Diese Strukturen entsprechen verschiedenen Stapelungen von wabenartigen Sn-Schichten in Oktaederlücken. α-Diagramme zeigen auch Na2SnO3, Na2ZrO3 und Li2MnO3, ferner die neuen Verbindungen Na2TbO3 und Na2HfO3. Li4MgReO6 kristallisiert in einer ähnlichen Struktur, wobei Mg2+ und Re6+ abwechselnd Sn4+ ersetzen. Ähnliches gilt auch für Li5JO6, Li5OsO6, Li5ReO6 und Li5TcO6. For β-Li3ReO4 und Li6MgRe2O9 werden symmetrische Kationenanordnungen vorgeschlagen. Abschließend werden alle bislang bekannten, mit Li2SnO3 isotypen Verbindungen zusammengestellt.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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