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  • 1
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von Ba(MgZn)V2O8, BaMn2V2O8 und Ba1/2Sr1/2Ni2V2O8 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 615 (1992), S. 97-100 
    Details
    ISSN: 0044-2313
    Keywords: Alkaline earth ; zinc ; manganese ; oxovanadates ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Ba(MgZn)V2O8, BaMn2V2O8, and Ba1/2Sr1/2Ni2V2O8Ba(Mg, Zn)V2O8 (A), BaMn2V2O8 (B) and Ba1/2Sr1/2Ni2V2O8 (C) were prepared by solid state reactions (A and B) and crystallization from a melt (C) respectively. (A—C) crystallize in the space group: D204h-I41/acd, Nr. 142. [Lattice constants (A): a = 12.4524(57) Å, c = 8.4408(36) Å; (B): a = 12.5563(14) Å, c = 8.5942(9) Å; (C): a = 12.2248(20) Å, c = 8.3245(15) Å]. (A), (B) and (C) are isotypic to SrNi2V2O8 but showing higher symmetry.
    Notes: Ba(Mg, Zn)V2O8 (A), BaMn2V2O8 (B), und Ba1/2Sr1/2Ni2V2O8 (C) wurden mit Hilfe von Feststoffreaktionen dicht unterhalb des Schmelzpunktes (A und B), bzw. durch Kristallisation aus der Schmelze (C), dargestellt und mit Röntgenbeugungsmethoden untersucht. (A—C) kristallisieren in der Raumgruppe: D204h-I41/acd, Nr. 142. [Gitterkonstanten (A): a = 12,4524(57) Å, c = 8,4408(36) Å; (B): a = 12,5563(14) Å, c = 8,5942(9) Å; (C): a = 12,2248(20) Å, c = 8,3245(15) Å]. (A), (B) und (C) sind mit SrNi2V2O8 isotyp, kristallisieren aber mit höherer Symmetrie.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926150919
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  • 2
    Electronic Resource
    Electronic Resource
    Eine weitere Oxovanadat-Phase mit Granatstruktur: Ca5Mg3ZnV6O24 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 615 (1992), S. 101-103 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; magnesium ; zinc ; vanadium ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An Additional Oxovanadate Phase with Garnet Structure: Ca5Mg3ZnV6O24Single crystals of Ca5Mg3ZnV6O24 were prepared by solid state reactions some degree below the melting point of the reaction mixture. It crystallizes with cubic symmetry, space group Td6-I43 d with a = 12.429 Å, Z = 4. The crystal structure is nearly related to the Garnet structure showing Ca2+ within distorted cubes (C.N. = 8) of O2- on a partly unfilled position. the octahedra position are occupied by Mg2+ and Zn2+ statistically.
    Notes: Einkristalle von Ca5Mg3ZnV6O24 wurden durch Feststoffreaktionen dicht unterhalb des Schmelzpunktes der Reaktionsmischung erhalten. Diese Substanz kristallisiert mit kubischer Symmetrie, Raumgruppe Td6-I43 d mit a = 12,429 Å, Z = 4. Die Kristallstruktur ist eng mit der Granatstruktur verwandt und zeigt Ca2+ in gestörten Würfeln von O2- (C.N. = 8) auf einer teilweise unaufgefüllten Punktlage. Die oktaedrisch koordinierten Positionen sind mit Mg2+ und Zn2+ statistisch besetzt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926150920
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