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'Thermoanalysis' in keywords Facet   Publication Year 1985  [X]
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1985[X]
1Author    U. W. Becker, J. Felsche, G. Huttner, O. ScheidstegerRequires cookie*
 Title    Preparation and Crystal Structure of a New Mixed Valence Cerium Germanate Ce2 + Ce! + [Ge0 4 ]3[Ge20 7 ]2[Ge 3 0 1 o]  
 Abstract    Opaque blue crystals of a new mixed valence cerium germanate have been prepared at elevated temperatures (1555 K) under careful thermoanalytical control. Single crystal structure analysis shows three different types of germanate anions [Ge0 4 ] 4 ~, [Ge 2 0 7 ] 6 ~ and [Ge 3 O 10 ] 8 ~, all ger-manium atoms being in tetrahedral coordination. Due to the larger number of oxygens per unit cell (Ce 2 Ge 2 0 72), with all the oxygens unambiguously located by X-ray single crystal structure analysis, this phase differs significantly from the corresponding cerium(III) germanate Ce 2 Ge 2 0 7 , which shows [Ge0 4 ] 4_ and [Ge 3 Oi 0 ] 8 ~, but no [Ge 2 0 7 ] 6 ~ ditetrahedral groupings. 
  Reference    Z. Naturforsch. 40b, 755—761 (1985); received January 30/March 3 1985 
  Published    1985 
  Keywords    X-Ray, Crystal Structure, Mixed Valence Cerium, Heavy Atom Layer Structure, Thermoanalysis 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0755.pdf 
 Identifier    ZNB-1985-40b-0755 
 Volume    40