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'Tellurium' in keywords Facet   Publication Year 1999  [X]
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1999[X]
1Author    B. Wedelb, K. Sugiyama3, K. Hiraga3, K. ItagakibRequires cookie*
 Title    Zur Kristallchemie des ersten Blei-Zink-Silicium-Telluroxids: PbZn4SiTeOio On the Crystal Chemistry o f the First Lead Zinc Silicon Tellurium Oxyde PbZn4SiTeO 10  
 Abstract    Single crystals of the new lead zinc silicon tellurium oxide PbZn4SiTeO10 have been prepared by solid state reaction in air. The compound is colourless and crystallizes in orthorhombic symmetryj space group Dih Pnma, with the cell parameters: a = 6.542 (5), b = 15.624(4), c = 8.280(4) A, Z = 4. The structure has been determined from a single crystal X-ray study and refined to the conventional values R = 0.032 and wR(F2) = 0.050. Zn~+ and Si4+ show tetrahedral and Te6+ octahedral coordination by 0 2~.The crystal structure is dominated by a ^ [Zn4O l0]12-framework with isolated Te066+ and Si044+ polyhedra. Pb2+ ions are incorporated in the network. The centres of negative charge of the lone of the Coulomb term of the lattice energy. 
  Reference    Z. Naturforsch. 54b, 469—472 (1999); eingegangen am 3. Dezember 1998 
  Published    1999 
  Keywords    Lead, Zinc, Silicon, Tellurium, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0469.pdf 
 Identifier    ZNB-1999-54b-0469 
 Volume    54 
2Author    *. Sonderdruckanforderungen, ProfK. Dr, DehnickeRequires cookie*
 Title    D ie Kristallstruktur von Bis(bromo  
 Abstract    -triphenyl)arsen(V)-hexabromo-tellurat(IV), [Ph3A sB r]2[TeBr6] Crystal Structure o f B is(brom otriphenyl)-arsen ic(V)-h exab rom otellu rate(IV), [Ph3A sB r]2[TeBr6] S oheila Chitsaz, Bernhard N eum üller, Kurt D eh nick e* Yellow-orange single crystals of [Ph3AsBr]2[TeBr6] have been prepared from satu­ rated solutions of Ph3AsBr2 and TeBr4 in aceto­ nitrile and characterized by a crystal structure de­ term ination. Space group R3c, Z = 12, lattice di­ mensions at -7 0 °C: a = b = 1337.9(2), c = 7953.8(4) pm, R = 0.0691. The structure consists of discrete ions [Ph3A sBr]+ and nearly perfectly octahedral [TeBr6]2-. 
  Reference    Z. Naturforsch. 54b, 1092—1094 (1999); eingegangen am 28. Mai 1999 
  Published    1999 
  Keywords    Arsenic, Tellurium, Bromo Complex, Crystal Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1092_n.pdf 
 Identifier    ZNB-1999-54b-1092_n 
 Volume    54