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1985 (1)
1Author    Siegfried Pohl, Wolfgang Saak, Bernt KrebsRequires cookie*
 Title    Tetrahalogenotellurate(II): Synthese und Kristallstrukturen von Verbindungen mit den Ionen TeX 4 2- (X = CI, Br, I) Tetrahalotellurates(II): Syntheses and Crystal Structures of Compounds with TeX 4 2 ~ Ions (X = CI, Br, I)  
 Abstract    The compounds [(C 6 H 5) 4 As] 2 TeCl 4 (1), [(C 2 H 5) 4 N] 2 TeBr 4 • CH 3 CN (2), and [(C 2 H 5) 4 N] 2 TeI 4 (3) were prepared by the reaction of Te, X 2 , and excess (QH^NX (X = Br, I) in acetonitrile solution or by heating of [(C 6 H 5) 4 As] 2 TeCl 6 , Te, and (C 6 H 5) 4 ASC1 for several hours in the same solvent. The structures of 1—3 were determined from single crystal X-ray data. 1 crystallizes in the monoclinic space group P2 x ln with a = 1061.8(2), b = 1614.2(3), c = 1341.7(3) pm, ß = 94.21° and Z = 2; 2: tetragonal, P4/mmm, a = 1039.7(2), c = 690.5(1), Z = 1; 3: tetragonal, 14/mmm, a = 1061.7(2), c = 1342.8(4), Z = 2. In 1-3 Te(II) exhibits a square planar coordination. The Te —CI, Te —Br, and Te—I bond lengths were found to be 260.7 (mean), 275.3, and 298.5 pm, respectively. 
  Reference    Z. Naturforsch. 40b, 251—257 (1985); eingegangen am 22. Oktober 1984 
  Published    1985 
  Keywords    Tetrahalotellurates(II), Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0251.pdf 
 Identifier    ZNB-1985-40b-0251 
 Volume    40