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1978 (1)
1Author    M. Arkus Brylak, Wolfgang JeitschkoRequires cookie*
 Title    U3TiSb5, U3VSb5, U3CrSb5, and U3MnSb5 with "Anti"-Hf5Sn3Cu Type Structure  
 Abstract    The title compounds have been prepared from the elem ental com ponents by arc-melting and subsequent annealing. Single crystals of U 3TiSb5 and U 3M nSb5 were obtained from a tin flux and their structures were determined from single-crystal X-ray data: P 63/mcm, Z = 2; a = 913.9(2), c = 611.2(1) pm, R = 0.011 (233 structure factors, 14 variables) for U 3TiSb5 and a = 916.8(2), c = 613.2(1) pm, R = 0.015 (427 structure factors, 14 variables) for U 3MnSb5. The lattice constants of the isotypic compounds are: a -908.2(2), c = 608.3(2) pm for U 3VSb5 and a -911.0(1), c = 611.5(1) pm for U^CrSb^. The structure of these antimonides may be regarded as an "anti"-type structure of Hf5Sn3Cu with the antimony atoms on the hafnium sites, while the positions of the uranium and transition metal atoms correspond to the posi­ tions of the tin and copper atoms. A comparison o f the interatomic distances of UVTiSbs with those of U 3Sb4, USb2, and a-antimony suggests oxidation numbers according to (U +III)3Ti+,v(S b l_III)3(S b 2_,I)2, where the Sb2 atoms form weakly bonded chains. 
  Reference    Z. Naturforsch. 49b, 747—752 (1994); received D ecem ber 16 1993 
  Published    1994 
  Keywords    Lattice Constants, Antimonides, X-Ray 
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 TEI-XML for    default:Reihe_B/49/ZNB-1994-49b-0747.pdf 
 Identifier    ZNB-1994-49b-0747 
 Volume    49 
2Author    Cornelia Mues, Hans-Uwe SchusterRequires cookie*
 Title    drei neue A 2 ßX-Verbindungen mit B-X-Kettenstruktur Na2AuAs, Na2AuSb, K2AuSb - Three New A2BX Compounds with a B-X Chain Structure  
 Abstract    The three new compounds crystallize ortho-rhombically, space group Cmcm with Na2AuAs: a = 887.1(2) pm, 6 = 712.9(2) pm, c = 576.0(2) pm; Na2AuSb: a = 927.9(3) pm, b = 756.2(2) pm, c = 584.1(5) pm; K2AuSb: a = 1045.9(5) pm, 6 = 786.1(3) pm, c = 650.0(5) pm. 
  Reference    Z. Naturforsch. 35b, 1055—1058 (1980); eingegangen am 14. April 1980 
  Published    1980 
  Keywords    Ternary Arsenide, Antimonide, Alkalimetal, Gold, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1055_n.pdf 
 Identifier    ZNB-1980-35b-1055_n 
 Volume    35 
3Author    Albrecht MewisRequires cookie*
 Title    AB2X2 Compounds with the CaAl2Si2 Structure, IV [1]  
 Abstract    The four ternary compounds CaZn2Sb2, CaCd2Sb2, SrZn2Sb2, and SrCd2Sb2 have been prepared and investigated by X-ray methods. They are isotypic and crystallize trigönally in a CaAl2Si2-type structure (space group P3ml-D3d) with the following constants: CaZn2Sb2 a = 4.441 ± 0.001 A, c = 7.464 ± 0.002 A; CaCd2Sb2 a = 4.649 ± 0.001 A, c = 7.597 ± 0.002 A; SrZn2Sb2 a = 4.500 ± 0.001 A, c = 7,716 ± 0.002 A; SrCd2Sb2 a = 4.709 ± 0.001 A, c = 7.822 ± 0.003 A. 
  Reference    Z. Naturforsch. 33b, 382—384 (1978); eingegangen am 23. Januar 1978 
  Published    1978 
  Keywords    Calcium Compounds, Strontium Compounds, 2 B-Elements, Antimonides, Crystal Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0382.pdf 
 Identifier    ZNB-1978-33b-0382 
 Volume    33