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1Author    Klaus Deller, Brigitte EisenmannRequires cookie*
 Title    The Crystal Structure of SrAs3  
 Abstract    The new intermetallic compound S1A.S3 crystallizes monoclinic, space group C2/m [a = 9.61(1) A, b = 7.63(1) A, c = 5.88(1) A, ß — 112.9(1)°). The anionic part of the struc-ture contains puckered layers of two-and threebonded As-atoms. 
  Reference    (Z. Naturforsch. 31b, 1550—1551 [1976]; eingegangen am 6. September 1976) 
  Published    1976 
  Keywords    Intermetallic Compounds, Arsenide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/31/ZNB-1976-31b-1550_n.pdf 
 Identifier    ZNB-1976-31b-1550_n 
 Volume    31 
2Author    Martin Pfisterer, Günter NagorsenRequires cookie*
 Title    Darstellung, Struktur und elektrische Eigenschaften der Phase CaCu4As2 Preparation, Crystal Structure and Electrical Conductivity of CaCu4As2  
 Abstract    Investigations in the system Ca-Cu-As resulted in the discovery of CaCuiAs2. The phase crystallizes in a rhombohedral structure (Trigonal axes: a = 417.3(6) pm, c = 2262(3) pm, space group R~3m). The conductivity varies from 47 to 89 (i2cm) -1 having a minimum at 250 K. 
  Reference    Z. Naturforsch. 37b, 420—422 (1982); eingegangen am 27. Oktober 1981 
  Published    1982 
  Keywords    Calcium, Copper, Arsenide, Ternary Compound 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0420.pdf 
 Identifier    ZNB-1982-37b-0420 
 Volume    37 
3Author    Peter Klüfers, Albrecht MewisRequires cookie*
 Title    Zur Struktur der Verbindungen BaZn2P2 und BaZn2As2 The Crystal Structure of BaZii2P2 and BaZn2As2  
 Abstract    New yü?2-X^2-compounds, BaZn2?2 and BaZn2As2, were prepared. The structures were determined by X-ray methods. In the case of BaZn2P2 (S.G. I4/mmm; a = 4.019 A, c = 13.228 A) layers of edgeshared ZnP4-tetrahedra alternate with Ba-layers; in the case of BaZn2As2 (S.G. Pnma; a = 10.010 A, b = 4.246 A, c = 10.910 A) Zn and As build a 3D-network of edge and vertex shared tetrahedra with Ba in the holes of this network. 
  Reference    Z. Naturforsch. 33b, 151—155 (1978); eingegangen am 19. Oktober 1977 
  Published    1978 
  Keywords    Ternary Barium Compounds, Zinc, Phosphide, Arsenide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0151.pdf 
 Identifier    ZNB-1978-33b-0151 
 Volume    33 
4Author    Albrecht MewisRequires cookie*
 Title    AB2X2-Verbindungen im CaAl2Si2-Typ, V [1] Zur Struktur der Verbindungen CaMn2P2, CaM^As*, SrMn2P2 und SrMn2As2  
 Abstract    Four ternary compounds with the formulas CaMn2P2, CaMn2As2, SrMn2P2, and SrMn2As2 have been prepared and investigated by X-ray methods. They are isotypic and crystallize trigonally in a CaAl2Si2-type structure (space group P 3 m 1-D3d) with the lattice constants: 
  Reference    Z. Naturforsch. 33b, 606—609 (1978); eingegangen am 20. März 1978 
  Published    1978 
  Keywords    Strontium Compounds, Calcium Compounds, Manganese, Phosphides, Arsenides 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0606.pdf 
 Identifier    ZNB-1978-33b-0606 
 Volume    33 
5Author    Albrecht Mewis, Peter BlumstengelRequires cookie*
 Title    Ternäre Verbindungen in den Dreistoffsystemen Calcium-Kupfer-Phosphor (Arsen) Ternary Compounds in the Systems Calcium -Copper -Phosphorus (Arsenic)  
 Abstract    By investigations in the systems Ca-Cu-P(As) we found two ternary phases of the formulas CaCuP and CaCuAs, which crystallize in a hexagonal lattice. We suppose a modified Ni2ln-type structure. Some details about a Calcium Copper Phosphide with a ThCr2Si2-type struc-ture are given. 
  Reference    Z. Naturforsch. 33b, 671—672 (1978); eingegangen am 3. März/4. April 1978 
  Published    1978 
  Keywords    Calcium Compounds, Copper, Phosphides, Arsenides, Crystal Data 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0671_n.pdf 
 Identifier    ZNB-1978-33b-0671_n 
 Volume    33 
6Author    Christoph Tiburtius, Hans-Uwe SchusterRequires cookie*
 Title    AB2X2 Compounds of Beryllium with 2 A-and 5 B-Elements  
 Abstract    The new compounds MgBe2P2, MgBe2As2, CaBe2P2 and CaBe2As2 have been prepared. They are supposed to crystallize trigonally in a CaAl2Si2-type structure. 
  Reference    Z. Naturforsch. 34b, 350—351 (1979); eingegangen am 23. Oktober 1978 
  Published    1979 
  Keywords    Beryllium Compounds, 2A-Elements, Phosphides, Arsenides 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-0350_n.pdf 
 Identifier    ZNB-1979-34b-0350_n 
 Volume    34 
7Author    Albrecht Mewis, Astrid DistlerRequires cookie*
 Title    Zur Kenntnis der Verbindungen CaNi2As2, SrNi2As2 und Ca2)3NiU)7As7  
 Abstract    Investigations of the systems Ca(Sr)-Ni-As resulted in the discovery of three ternary phases. CaNi2As2 and SrNi2As2 are isotypic and crys-tallize in the ThCr2Si2-structure (space group 14/mmm) with the following constants: CaNi2As2 a = 406.5(1) pm, c= 994.9(2) pm, SrNi2As2 a = 415.4(1) pm, c = 1029.0(2) pm. Ca2.3Niu.7As7 (0= 940.4(1) pm,c= 381.6(l)pm) crystallizes in a hexagonal lattice; a Zr2Fei2P7-structure is supposed. 
  Reference    Z. Naturforsch. 35b, 391—393 (1980); eingegangen am 26. November 1979 
  Published    1980 
  Keywords    Arsenides, Nickel, Crystal Structure, Calcium, Strontium 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0391_n.pdf 
 Identifier    ZNB-1980-35b-0391_n 
 Volume    35 
8Author    Albrecht MewisRequires cookie*
 Title    Zur Struktur der Verbindungen SrZn2As2, SrCd2As2 und YbMnCuP2 AB2X2 Compounds with the CaAl2Si2 Structure, VII [1] The Crystal Structure of SrZn2As2, SrCd2As2, and YbMnCuP2  
 Abstract    The compounds SrZn2As2, SrCd2As2, and YbMnCuP2 have been prepared and their structures determined. They are isotypic and crystallize trigonally in a CaAl2Si2-type structure (space group P3ml) with the lattice constants: 
  Reference    Z. Naturforsch. 35b, 939—941 (1980); eingegangen am 24. März 1980 
  Published    1980 
  Keywords    Ternary Compounds, Arsenides, Phosphide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0939.pdf 
 Identifier    ZNB-1980-35b-0939 
 Volume    35 
9Author    Viktor Keimes, Albrecht MewisRequires cookie*
 Title    Strukturvarianten des MgCu2 -Typs: Die Verbindungen Mg2 Ni3P und Mg2 Ni3As  
 Abstract    Variants of the M gC u2 Type: The C om pounds M g2N i3P and M g2N i3As The com pounds M g2N i3P and M g2N i3A s were prepared by heating the elements. Their structures have been determined from single-crystal X-ray data. The structure o f the phosphide is a rhombohedral ternary variant o f the cubic Laves structure type M gCu2 (R 3m ; hexagonal lattice constants: a = 4.971(0)Ä , c = 10.961 (2) Ä). The ordered substitution o f one quarter o f the metal atom s by phosphorus and the resulting shorter distances are responsible for the rhombohedral symmetry. The arsenide crystallizes in the M gC u2 type structure (F d3m ; a = 6.891(1)A , com position M g2N i3A s) with a statistic distribution o f the N i and As atoms; the relevant hom ogeneity range extends from M g2N i2 9A s , , to M g2N i3 5A s0 5. 
  Reference    Z. Naturforsch. 47b, 1351—1354 (1992); eingegangen am 23. März 1992 
  Published    1992 
  Keywords    M agnesium, N ickel, Phosphide, Arsenide, Crystal Structure 
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 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-1351.pdf 
 Identifier    ZNB-1992-47b-1351 
 Volume    47 
10Author    Wolfgang Jeitschko, LudgerJ. Terbiichte, Ute Ch, RodewaldRequires cookie*
 Title    Ternary Rare Earth and Uranium Nickel Arsenides Lw2NiAs2 (Ln = Tb -Yb), LwNiAs {Ln = La -Nd, Sm, Gd, Dy -Yb), and UNiAs  
 Abstract    The new compounds TnbNiAsa and Yb2NiAs2 crystallize with a hexagonal structure similar to that reported for Zr2NiAs2. It was refined for Tm2NiAs2 from single-crystal X-ray data in the polar space group P63mc\ a = 408.4(1), c = 1374.2(3) pm, R = 0.044 for 176 structure factors and 16 variable parameters. The compounds L«2NiAs2 (Ln = Tb -Er) are confirmed to crystallize with an analogous structure from X-ray powder data. In contrast to the earlier structure refinement of Zr2NiAs2 in the higher-symmetric space group P 63/mmc, where the honeycomb layers of nickel and arsenic atoms are described as planar, these layers are puckered in Tm 2N iAs2. These compounds are expected to undergo a displacive phase transition, with the centrosymmetric space group P6i/m m c to be correct at high temperature. Since the room temperature structure is polar, these compounds might be classified as ferroelectric from a symmetry point of view. The equiatomic title compounds LnNiAs and UNiAs crystallize with a related hexagonal structure corresponding to a superstructure of the AIB2 type with lattice constants varying between a = 416.2(1), c = 1636.1(4) pm for LaNiAs and a = 401.9(2), c = 1488.5(5) pm for YbNiAs. The crystal chemistry of these hexagonal structures is briefly discussed. Using oxidation numbers chemical bonding in the lanthanoid containing compounds may be rationalized with the formulas (Ln+3)2N i(As_3)2 and Ln+3N iA s~3, thus suggesting semiconducting behavior. 
  Reference    Z. Naturforsch. 56b, 1281—1288 (2001); received August 12 2001 
  Published    2001 
  Keywords    Rare Earth Compounds, Arsenides, Displacive Phase Transition 
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 TEI-XML for    default:Reihe_B/56/ZNB-2001-56b-1281.pdf 
 Identifier    ZNB-2001-56b-1281 
 Volume    56 
11Author    Albrecht MewisRequires cookie*
 Title    Darstellung und Struktur der Verbindungen MgCuP, BaCuP(As) und BaAgP(As) Preparation and Crystal Structure of MgCuP, BaCuP(As), and BaAgP(As)  
 Abstract    The ABX-compounds MgCuP, BaCuP(As) and BaAgP(As) have been prepared and their structures determined. MgCuP crystallizes orthorhombically in an anti-PbCl2-structure (space group Pnma-D.Jg, a = 653.2(1) pm, b — 383.5(1) pm, c = 717.0(1) pm). The compounds BaCuP(As) and BaAgP(As) are isotypic and crystallize in a modified Ni2ln-structure (space group P 63/mmc-D^) with the lattice constants: 
  Reference    Z. Naturforsch. 34b, 1373—1376 (1979); eingegangen am 28. Juni 1979 
  Published    1979 
  Keywords    Phosphides, Arsenides, 2 A Elements, 1B Elements, Crystal Structure 
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 TEI-XML for    default:Reihe_B/34/ZNB-1979-34b-1373.pdf 
 Identifier    ZNB-1979-34b-1373 
 Volume    34 
12Author    Albrecht MewisRequires cookie*
 Title    Neue ternäre Phosphor-und Arsenverbindungen mit Zr2Fe12P7-Struktur New Ternary Compounds of Phosphorus and Arsenic with the Zr2Fei2P7-Structure  
 Abstract    The ternary compounds Mg2.5Ni11.5P7, Ca2.1Ni11.9P7 and Ca2.3Nin.7As7 were structurally characterized. They are isotypic and crystallize in the Zr2Fei2P7-type (space group P 6) with the following constants: 
  Reference    Z. Naturforsch. 35b, 620—625 (1980); eingegangen am 11. Januar 1980 
  Published    1980 
  Keywords    Phosphides, Arsenide, 2 A Elements, Nickel, Crystal Structure 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-0620.pdf 
 Identifier    ZNB-1980-35b-0620 
 Volume    35