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'Sodium' in keywords Facet   Publication Year 1995  [X]
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1995[X]
1Author    F.-DM. Artin, H.K M Üller-B, UschbaumRequires cookie*
 Title    Eine synthetische Spezies zum Mineral Howardevansit mit Eisen anstelle von Kupfer: NaFe3V 30 12  
 Abstract    Single crystals of NaFe3V30 12 have been prepared by solid state reaction below the melt­ ing point of the reaction mixture. This compound is isotypic to the mineral Howardevansite but shows lower triclinic symmetry, space group C }-P 1 , a = 6.757(2), b = 8.155(2), c = 9.816(3) Ä, a = 106.05(2), ß = 104.401(9), y = 102.09(2)°, Z = 2. The acentric space group is caused by the sodium positions, all other atoms comply with the space group PI of Howarde­ vansite. The different ions are coordinated by O2-forming V 0 4 tetrahedra, FeOfi octahedra, trigonal FeOs bipyramids and irregular NaOs and NaOy polyhedra, respectively. The crystal chemistry is discussed with respect to Howardevansite. 
  Reference    (Z. Naturforsch. 50b, 51—55 [1995]; eingegangen am 5. August 1994) 
  Published    1995 
  Keywords    Sodium, Iron, Vanadium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0051.pdf 
 Identifier    ZNB-1995-50b-0051 
 Volume    50 
2Author    S. Frenzen, Hk Müller-BuschbaumRequires cookie*
 Title    Uber das gemischte Alkali-Erdalkalimetall-Oxoruthenat NaSr3R u 0 6 The Mixed Alkaline Alkaline E arth O xoruthenate NaSr3R u 0 6  
 Abstract    Single crystals of NaSr3R u 0 6 have been prepared in closed silver tubes and investigated by X-ray techniques^ This compound crystallizes with trigonal (rhombohedral) symmetry, space group Ö3d-R 3 c , a = 9.6069(8), c = 11.513(2) A, Z = 6, and is isotypic to compounds of the Sr4P t 0 6 type. The crystal structure is discussed with respect to related compounds with partial replacement o f alkaline earth elem ents by sodium and copper. 
  Reference    Z. Naturforsch. 50b, 581 (1995); eingegangen am 4. Oktober 1994 
  Published    1995 
  Keywords    Sodium, Strontium, Ruthenium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0581.pdf 
 Identifier    ZNB-1995-50b-0581 
 Volume    50