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'Tellurium' in keywords Facet   Publication Year 1996  [X]
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1996[X]
1Author    Kuhn3, Thomas Kratz3, G. Erald, H. EnkelbRequires cookie*
 Title    N orbert  
 Abstract    The carbene adduct 5 is formed from the 2-tel-luroimidazoline 4 and iodine. The X-ray structure analysis reveals a dimeric structure in the solid state. 
  Reference    Z. Naturforsch. 51b, 295 (1996); eingegangen am 21. Juli 1995 
  Published    1996 
  Keywords    Tellurium, Carbene, Iodine Reaction, X-Ray 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0295_n.pdf 
 Identifier    ZNB-1996-51b-0295_n 
 Volume    51 
2Author    Hk Sedello, Müller-BuschbaumRequires cookie*
 Title     
 Abstract    Single crystals of BaCuTe03T e 0 4 have been prepared by crystallisation from melts. X-ray investigations lead to orthorhombic symmetry, space group C2v-Ama2, a = 5.4869(8), b = 15.412(1), c = 7.2066(4) A , Z = 4. This compound represents a new structure type, containing B aO 10, C u 0 5, T e 0 6 and T e 0 4 polyhedra. The lone pair (E) of TeIV completes the TeIV0 4 polyhedron to a trigonal T e 0 4E bipyramid. The Te to E distance is estimated by calculations o f the Coulomb terms of lattice energy to 1.43 A . 
  Reference    Z. Naturforsch. 51b, 465—468 (1996); eingegangen am 31. August 1995 
  Published    1996 
  Keywords    Barium, Copper, Tellurium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-0465.pdf 
 Identifier    ZNB-1996-51b-0465 
 Volume    51 
3Author    Ot, (.M = Niobium, Tantalum) B Wedel, Hk Miiller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie der Barium-Oxometallat-Tellurite: Ba2M6Te202i (M = Niob und Tantal) On the Crystal Chemistry of the Barium Oxometallate-Tellurites Ba-,M6Te  
 Abstract    Single crystals of Ba2Nb6Te20 2| (I) and Ba2Ta6Te20 2| (II) have been prepared by solid state reactions in air. X-ray investigations led to monoclinic symmetry, space group C 3h -C2/m, (I): a = 16.699(3), b = 5.671(2), c = 9.611(2) A, ß = 96.92(2), (II): a = 16.655(8), b = 5.667(2), c = 9.576(4) Ä, ß = 96.64(7), Z = 2. N b5+ or Tas+ show octahedral and Te4+ a one sided triangular coordination by O 2 -. The position and distance of the lone pair on Te4+ have been estimated by calculations of the Coulomb terms of the lattice energy. The polyhedron around Ba2+ may be described by a triply capped BaO^cube. The crystal structures are dominated by a ^ [Nb60 2l] l2~ network with incorporated Ba~+ and Te4+ ions. 
  Reference    Z. Naturforsch. 51b, 1411—1414 (1996); eingegangen am 28. März 1996 
  Published    1996 
  Keywords    Barium, Niobium, Tantalum, Tellurium, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1411.pdf 
 Identifier    ZNB-1996-51b-1411 
 Volume    51 
4Author    Z. NaturforschRequires cookie*
 Title    Über ein Blei-Kupfer-Tellurat PbC^TeOy mit Cu2+ in deformiert tetragonal pyramidaler und tetraedrischer Sauerstoffkoordination  
 Abstract    On a Lead C opper Tellurate P b C u 3T e 0 7 Containing C u2+ in D istorted Square Pyram idal and Tetrahedral O xygen C oordination B. W edel, Hk. M üller-B uschbaum * PbCu3T e07 has been prepared from the element oxides by solid state reaction in air. Single crystal X-ray work led too orthorhombic symmetry, space group D^-Pnma, a = 10.488(1), b = 6.353(2), c = 8.813(2) A, Z = 4. Cu(1)0 5 square pyramids and Te06 octahedra are members of the anionic part of the crystal structure, Cu(2) atoms show tetrahedral coordination by oxygen. The C u (2)2+ and the Pb2+ cations are incorporated into a [Cu(l)2Te07] network. PbCu,Te07 can thus be viewed as a lead copper oxocuprate(II) tellurate. Calculations of the Coulomb terms of lattice energy reveal two possible positions for the lone pair of electrons at Pb'+. 
  Reference    Z. Naturforsch. 51b, 1587—1590 (1996); eingegangen am 21. Mai 1996 
  Published    1996 
  Keywords    Lead, Copper, Tellurium, Oxide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1587.pdf 
 Identifier    ZNB-1996-51b-1587 
 Volume    51