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'copper' in keywords Facet   Publication Year 1980  [X]
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1980[X]
1Author    Ž. Blažina, Z. BanRequires cookie*
 Title    The Crystal Structures of U2Cu3 AL and UCUA12, and their Relationship with Some Other Phases in the System U-Cu-Al  
 Abstract    X-ray investigations of a great number of samples along the specifically chosen tie-lines in the isothermal sections of the system U-Cu-Al (800 °C) indicated the existence of two new ordered ternary phases, i.e. U2CU3A1 and UCUA12. The first one is hexagonal (S. G. P63/mmc, MgZn2-type), with a = 5.065 ± 0.005 A, c = 8.307 ± 0.005 A and c/a = 1.640. The ordered atomic arrangement of all atoms, as confirmed by trial and error method is consistent with a rather uncommon superstructure of the MgZn2-type. UCUA12 is tetragonal, a = 3.857 ± 0.005 A, c = 8.736 ± 0.005 A, c/a = 2.265, probable space group is I4/mmm, and represents an ordered ternary structure variant of the TiAl3 type. The crystal structures of these two new phases were correlated, in terms of stacking sequences, with those which were identified in this system previously. 
  Reference    Z. Naturforsch. 35b, 1162—1165 (1980); received March 3 1980 
  Published    1980 
  Keywords    Aluminium, Copper, Uranium, Intermetallic Compound 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1162.pdf 
 Identifier    ZNB-1980-35b-1162 
 Volume    35 
2Author    Albrecht MewisRequires cookie*
 Title    Darstellung und Struktur der Verbindung CaCu4P2 Preparation and Crystal Structure of CaCu4P2  
 Abstract    of the system Ca-Cu-P resulted in the discovery of CaCu4P2. The compound crystallizes in a trigonal-rhombohedral structure (hexagonal axes: a = 403.6(1) pm, c = 2227.2(2) pm; space group R3m) which contains structural elements of the compound CU3P. 
  Reference    Z. Naturforsch. 35b, 942—945 (1980); eingegangen am 27. März 1980 
  Published    1980 
  Keywords    Ternary Calcium Compound, Copper, Phosphide, Crystal Structure Investigations 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0942.pdf 
 Identifier    ZNB-1980-35b-0942 
 Volume    35 
3Author    Heinz Rupp, K., Jozef Verplaetse, Rene LontieRequires cookie*
 Title    Binuclear Copper Electron Paramagnetic Resonance Signals of a-Methemocyanin of Helix pomatia  
 Abstract    The binuclear electron paramagnetic resonance signals o f a-methemocyanin o f Helix pomatia were investigated at liquid helium temperatures. These signals were completely eliminated by the addition of fluoride and enhanced in the presence o f chloride, which did not alter the saturation behavior. The triplet nature of the signal at g = 4.59 was confirmed by the low power-saturation. The addition of nitrite at pH 5.0 and 0° C yielded slowly and reversibly a seven-line half-field signal. On lowering the temperature the intensity of the triplet signals increased to the lowest tem­ perature reached 4.2 K, excluding a strong exchange coupling. 
  Reference    Z. Naturforsch. 35c, 188—192 (1980); received September 18/November 17 1979 
  Published    1980 
  Keywords    Copper, Electron Paramagnetic Resonance, Hemocyanin, Microwave Power Saturation 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0188.pdf 
 Identifier    ZNC-1980-35c-0188 
 Volume    35 
4Author    Peter Klüfers, Hermann Neumann, Albrecht Mewis, Hans-Uwe SchusterRequires cookie*
 Title    CaAl2Si2-Typ, VIII [1] AB2X2 Compounds with the CaAl2Si2 Structure, VIII [1]  
 Abstract    Thirteen new compounds were synthesized. They are supposed to crystallize with_ the CaAl2Si2 type of structure (space group P3ml) with the following constants: 
  Reference    Z. Naturforsch. 35b, 1317—1318 (1980); eingegangen am 12. Mai 1980 
  Published    1980 
  Keywords    2a-and 2b-Elements, Yttrium, Copper, Rare Earth Elements, Pnictides 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1317_n.pdf 
 Identifier    ZNB-1980-35b-1317_n 
 Volume    35