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1999 (2)
1987 (1)
1Author    Roland Zagler, Brigitte Eisenmann, Herbert SchäferRequires cookie*
 Title    Tritelluride mit komplexierten Kationen: Darstellung und Kristallstruktur von [Ba(en) 3 ]Te 3 und [Ba(en) 4;5 ]Te 3 Tritellurides of Complex Cations: Synthesis and Crystal Structure of [Ba(en) 3 ]Te 3 and [Ba(en) 4 5 ]Te 3  
 Abstract    The two title compounds have been prepared by reaction of appropriate mixtures of the elements in ethylenediamine. The structures have been determined on the basis of single crystal data. [Ba(en) 3 ]Te 3 crystallizes in the monoclinic system, space group P2 (/c with a = 918.0(4), b — 1203.7(6), c = 1639.9(6) pm, ß = 93.4(1)°. In the structure there are bent tritelluride anions Te 3 2 ~ (bond lengths 273.9—278.5 pm, bond angle 105.7°). The Ba 2+ cations are six coordinate by the bidentate ligand ethylenediamine. [Ba(en) 4 5 ]Te 3 crystallizes in the monoclinic system, space group Cc with a = 1752.8(6), b = 938.9(4), c = 3041.7(8) pm, ß = 91.3(1)°. In this structure the bond lengths in the Te 3 2 ~ anions are shorter (272.1—273.1 pm, bond angles 110.9—112.2°). The cations are coordinated by four bidentate ligands, and are connected into pairs by a further ethylenediamine molecule. The resulting dinuclear [Ba(en) 4 ]en[Ba(en) 4 ] 4+ units have the Ba 2+ cations in CN 9. 
  Reference    Z. Naturforsch. 42b, 151—156 (1987); eingegangen am 7. 0ktober/20. November 1986 
  Published    1987 
  Keywords    Tellurides, Polyanions, Crystal Structure 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0151.pdf 
 Identifier    ZNB-1987-42b-0151 
 Volume    42 
2Author    KurtO. Klepp, Andreas KolbRequires cookie*
 Title    Komplexe Chalkogenide der IVa Metalle mit niedrigdimensionalen anionischen Partialstrukturen. Darstellung und Kristallstruktur von K2ZrTe3 und Rb2ZrTe3 Complex Chalcogenides of the IVa Metals with Low Dimensional Anionic Partial Structures. Preparation and Crystal Structures of K2ZrTe3 and Rb2ZrTe3  
 Abstract    The isostructural compounds K2ZrTe3 and Rb2ZrTe3 were obtained at 1000°C by reacting K7Te and Rb9Te with stoichiometric amounts of Zr and Te. The compounds are monoclinic, mP24, space group P2,/c, Z = 4 with a = 9.089(3), b = 14.148(4), c = 6.986(3)Ä, ß = 105.90(1)° and a = 9.735(4), b = 14.300(7), c = 6.952(8) Ä, ß = 108.61(2)°, respectively. The crystal structure was determined from diffractometer data and refined to R = 0.030 for 1452 Fo's for K2ZrTe3 and R = 0.038 for 1131 Fo's for Rb2ZrTe3. The crystal structure is of a new type, characterized by infinite anionic chains, ^-[ZrTe3]2_ built up by octahedra sharing opposite faces which run along [001]. The mean Zr-Te bond lengths are 2.921 and 2.920 A, respectively. The alkali cations separating the chains are characterized by two different -distorted octahedral and pentagonal bipyramidal -chalcogen environments. E inleitung 
  Reference    Z. Naturforsch. 54b, 441 (1999); eingegangen am 9. November 1998 
  Published    1999 
  Keywords    Crystal Structure, Complex Chalcogenides, Tellurides, Zirconium, Pseudo-one-dimensional solids 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0441.pdf 
 Identifier    ZNB-1999-54b-0441 
 Volume    54 
3Author    Gissur Örlygsson, Bernd HarbrechtRequires cookie*
 Title    The Crystal Structure of WC Type ZrTe. Advantages in Chemical Bonding as Contrasted to NiAs Type ZrTe  
  Reference    Z. Naturforsch. 54b, 1125—1128 (1999); received May 20 1999 
  Published    1999 
  Keywords    Zirconium, Telluride, Crystal Structure, Electronic Structure, WC Type Structure 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1125.pdf 
 Identifier    ZNB-1999-54b-1125 
 Volume    54