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  • Barium  (2)
  • Wiley-Blackwell  (2)
  • 1990-1994  (2)
  • 1970-1974
  • 1993  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 123-127 
    ISSN: 0044-2313
    Keywords: Potassium ; Calcium ; Barium ; Copper ; Vanadium Oxide ; Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A new Alkaline-Alkaline-Earth-Copper-Oxovanadate: Kba3Ca4Cu3V7O28.Single crystals of Kba3Ca4Cu3V7O28 were prepared by solid state reactions below the melting point of the reaction mixture. It crystallizes with hexagonal symmetry, space group C6v4-P63mc, a=11.160, c=12.428 Å, Z=2. Kba3Ca4Cu3V7O28 represents a new structure type with special coordination polyhedra around Ba2+, trigonal prisms and octahedra around Ca2+ and Cu2+ inside square pyramids. The crystal structure will be shown and discussed.
    Notes: Einkristalle von Kba3Ca4Cu3V7O28 wurden durch Feststoffreaktionen, knapp unterhalb des Schmelzpunktes, erhalten. Die Verbindung kristallisiert hexagonal, Raumgruppe C6v4-P63mc, a=11,160, c=12,428 Å, Z=2. Kba3Ca4Cu3V7O28 repräsentiert einen neuen Strukturtyp, mit speziellen Koordinationspolyedern um Ba2+, trigonalen Prismen und Oktaedern um Ca2+ und Cu2+ in tetragonal pyramidaler Koordination. Die Kristallstruktur wird vorgestellt und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Barium ; indium ; zinc ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Structure of Ba3In2Zn5O11. An Oxoindate/zincatesol;zincate with Zn10O20 and In4O16 Macropolyhedra with Zn2+ in Tetrahedral Coordination by O2-Ba3In2Zn5O11 was prepared for the first time by a flux technique and investigated by single crystal X-ray work. It crystallizes with cubic symmetry, space group T2d-F43m, a = 13.3588 Å, Z = 8. Zn2+ show tetrahedral coordination by O2-, forming Zn10O20 macropolyhedra. In addition the nZn/Osol;O part of the crystal structure is made up of Zn10O20 parts. Edge connection of four InO6 octahedra results in In4O16 groups. The crystal structure will be shown and discussed.
    Notes: Mit einer Schmelzmitteltechnik wurde erstmals Ba3In2Zn5O11 dargestellt und an Einkristallen röntgenographisch untersucht. Es kristallisiert kubisch, in der Raumgruppe T2d-F43m, mit a = 13,3588 Å und Z = 8. Zn2+ ist tetraedrisch von O2- koordiniert und bildet Zn10O20-Makropolyeder. Ferner wird der nZn/Osol;O-Teil der Kristallstruktur aus Zn10O20-Bausteinen zusammen-gesetzt. Die oktaedrisch koordinierten In3+-Ionen verknüpfen über Kanten zu In4O16-Baugruppen. Die Kristallstruktur wird vorgestellt und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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