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1980 (1)
1Author    Bernt Krebs, Diethard SinramRequires cookie*
 Title    B. Krebs-D. Sinram * Darstellung, Struktur und Eigenschaften einer neuen Modifikation von Nbls 20 Preparation, Structure and Properties of a New Modification of Nbls  
 Abstract    Triclinic niobium(V) iodide was prepared from the elements at an iodine pressure of 3-4 bar in a temperature gradient from 400 to 230 °C. It crystallizes in the space group PI with a = 7.591(3), b = 10,322(3), c = 6.977(3) A, a = 90.93(3), ß = 116.17(3), y = 109.07(3)°, Z = 2 Nbls. The single-crystal X-ray structure analysis shows the compound to contain dimeric Nb2lio molecules with Nb-I bond lengths of 2.933 and 2.939(1) A for the bridge bonds and of 2.639 • • • 2.720(1) A for the terminal bonds. The structure is isotypic with triclinic /S-UCI5. The infrared spectrum indicates stretching vibrations at 148, 202, 214 and 242 cm-1 . 
  Reference    (Z. Naturforsch. 35b, 12—16 [1980]; eingegangen am 26. September 1979) 
  Published    1980 
  Keywords    Niobium(V) Iodide, Transition Metal Halides, Crystal Structure, Vapour Transport 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0012.pdf 
 Identifier    ZNB-1980-35b-0012 
 Volume    35