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'Vanadium' 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. Münchau, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie eines Silber-Cadmium-Oxovanadats: AgCdV04 On the Crystal Chemistry of a Silver Cadmium Oxovanadate: A gC dV 04  
 Abstract    Single crystals of A gC dV 04 have been prepared in closed silver tubes using V20 5 as a flux. The light-orange crystals sho\v orthorhom bic symmetry, space group D2h-Pnm a, a = 9.786(2), b = 6.994(1), c = 5.439(1) A, Z = 4. The hitherto unknown A gC dV 04 is related to the Olivine structure but isotypic to Ag2C r 0 4 and NaCd4(V 0 4)3 respectively. The differences in crystal chemistry between the Olivine type, NaCd4(V 0 4)3 and A gC dV 04 are discussed. 
  Reference    Z. Naturforsch. 50b, 703—706 (1995); eingegangen am 10. O ktober 1994 
  Published    1995 
  Keywords    Silver, Cadmium, Vanadium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-0703.pdf 
 Identifier    ZNB-1995-50b-0703 
 Volume    50 
3Author    VerbindungC., S. Münchau, Hk Müller-BuschbaumRequires cookie*
 Title    Synthese und Kristallstruktur einer mit dem Johillerit verwandten  
 Abstract    Single crystals of C dC u^M gx.5Pbo.5V30 12 have been prepared in closed steel tubes using V 20 5 as a flux. The orange crystals show monoclinic symmetry, space group C2h-C 2 /c , a = 12.417(5), b = 12.983(6), c = 6.911(3) Ä , ß = 113.02(1)°, Z = 4. CdCu1.5Mg1.5PbojV30 12 reveals a relationship to the Johillerite type, but it is characterized by an additional point position for cadmium, situated betw een the square planar C u 0 4 polygons of the Johillerite structure. 
  Reference    Z. Naturforsch. 50b, 1158—1162 (1995); eingegangen am 22. D ezem ber 1994 
  Published    1995 
  Keywords    Cadmium, Copper, Magnesium, Lead, Vanadium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1158.pdf 
 Identifier    ZNB-1995-50b-1158 
 Volume    50 
4Author    J. Feldmann, Hk Müller-BuschbaumRequires cookie*
 Title    Kristallstrukturuntersuchung an einem bismuthaltigen Hollandit: Crystal Structure Investigation of the Bismuth Containing Hollandite: Bij 9Cu4V40 16  
 Abstract    Single crystals of B^ 9Cu4V 4O i6 have been prepared by quenching of CO2-LA SER heated samples. They were investigated by X-ray techniques. The compound^ crystallizes with tetra­ gonal symmetry, space group C4h-I 4 /w , a = 9.945(2) A, c = 2.915(3) A, Z = 1, and is isotypic to the mineral Hollandite. B^ 9Cu4V4O i6 is the first Hollandite with a statistical distribution of vanadium and copper in the network o f octahedra. Calculations of the Coulomb terms of lattice energy led to a distance o f bismuth to the lone pair of 1.07 A. Considering the lone pair as part of the coordination sphere of Bi3+ a square pyramidal polyhedron is obtained. 
  Reference    Z. Naturforsch. 50b, 1163—1166 (1995); eingegangen am 22. D ezem ber 1994 
  Published    1995 
  Keywords    Bismuth, Copper, Vanadium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/50/ZNB-1995-50b-1163.pdf 
 Identifier    ZNB-1995-50b-1163 
 Volume    50