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'Copper Rare Earth Molybdenum Oxide' in keywords Facet   Publication Year 1995  [X]
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1Author    Hk Müller-Buschbaum, St GallinatRequires cookie*
 Title    Synthese und Röntgenstrukturanalyse von KCuGd2Mo40 16 und KCuTb2Mo40 16 Synthesis and X-Ray Analysis of KCuGd2Mo4O i6 and KCuTb2Mo40 I6  
 Abstract    Single crystals of the so far unknown compounds KCuGd2M o4O t6 (I) and KCuTb2M o40 16 (II) have been prepared by flux technique. The compounds crystallize with monoclinic sym­ metry. space group C^h-C 2 /c with (I): a = 5.278(2), b = 12.666(5), c = 19.604(14) Ä; ß = 92.76(6)°; (II): a = 5.259(13), b = 12.616(3), c = 19.556(9) A, ß = 92.93(4)°, Z = 4. M olyb­ denum exhibits tetrahedral coordination. The surroundings of copper can be described by distorted tetrahedra, capped by two more distant oxygen atoms, and the rare earth ions show a square antiprism. Potassium is inside an irregular polyhedron. The relationship of the structures o f (I) and (II) is discussed with respect to the KLnMo2Os type compounds. Coulomb term calculations of the lattice energy indicate an oxidation state of copper higher than Cu1. 
  Reference    Z. Naturforsch. 50b, 1794—1798 (1995); eingegangen am 29. Mai 1995 
  Published    1995 
  Keywords    Potassium, Copper Rare Earth Molybdenum Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1794.pdf 
 Identifier    ZNB-1995-50b-1794 
 Volume    50