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'copper' in keywords Facet   Publication Year 1998  [X]
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1998[X]
1Author    B. Wulff, Hk Wedel, Müller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie von Telluraten mit Mn2+ im kationischen und anionischen Teil der Kristallstruktur: (Mn2?4Cuo,6)Te06, Ba2M nTe06 und Pb(Mn0,5 Te0,5 )O3 On the Crystal Chemistry of Tellurates Containing Mn2+ in the Cationic and Anionic Part of the Crystal Structure: (Mn2 4Cu0 6)Te06, Ba2MnTe06 and Pb(Mn0 5Te0 5) 0 3 L  
 Abstract    Single crystals of (Mn2.4Cu0 6)Te06 (I), Ba2MnTe06 (II) and Pb(Mn0 5Te0 5) 0 3 (III) have been prepared by crystallization from fluxes. X-ray investigations led to rhombohedric sym­ metry (I): R3, (II): R3m with the trigonal lattice constants (I): a = 8.826(1), c = 10.687(2) Ä, Z = 2. (II): a = 5.817(8), c = 14.244(3) A, Z = 3. Compound (III) crystallizes with cubic symmetry P43m, a = 4.045(3) A, Z = 1. (I) is the first example of a manganese(II) tellurate and belongs to the structure type of A3X 0 6 compounds like (Mn2In)Sb06, Mn3W 0 6 and Ca3U 0 6. (II) exemplifies an ordered and (III) a disordered variation of the perovskites. 
  Reference    (Z. Naturforsch. 53b, 49—52 [1998]; eingegangen am 15. Oktober 1997) 
  Published    1998 
  Keywords    Manganese, Copper, Lead, Barium, Tellurates 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0049.pdf 
 Identifier    ZNB-1998-53b-0049 
 Volume    53 
2Author    Andre Wiesch3, Hauke Timmb, Karsten Bluhm3Requires cookie*
 Title    Uber CuDy2[B80 16] und CuHo2[B80 16]: Zwei neue "Metaborate" mit einem ^ [B80 16]g_-Anion On CuDy2[B80 16] and CuHo2[B80 16]: Two New "Metaborates" with a ^ [B80 16]8-Anion  
 Abstract    Nearly colourless single crystals of the compounds CuDy2 [B80 i 6] (I) and CuHo2[B80)6] (II) have been obtained by a B20 3 flux technique. They crystallize in the structure of CuTb2 [B80)6] (I) or in an orthorhombic variant (II). X-ray investigations on single crystals led to the space group C2h -P2!/c (Nr. 14) with lattice parameters a = 1025,5(10); b = 836,99(10); c = 621,2(8) pm, ß = 90.47(10)°; Z = 2 (I) and D^h -Pbam (Nr. 55) with a = 840,7(2), b = 616,6(2), c = 1022,0(2) pm, Z = 2 (II). The structures contain 1 [B80 16]8_ chains isolated from each other, which include tri-and tetracoordinated boron, T'fie chains consist of alternating twelve and eight-membered rings of boron and oxygen atoms connected by B 0 4 units. Dy,+ and H o 3+ are octacoordinated and Cu2+ is hexacoordinated in elongated octahedra by oxygen. The relation between these two structures is discussed. 
  Reference    (Z. Naturforsch. 53b, 1—4 [1998]; eingegangen am 23. Oktober 1997) 
  Published    1998 
  Keywords    Copper, Lanthanoids, Borate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0001.pdf 
 Identifier    ZNB-1998-53b-0001 
 Volume    53 
3Author    Lanthanoid Borates, A. Wiesch, K. BluhmRequires cookie*
 Title    CuHo2[B20 5]2* Ein unerwarteter Strukturtyp in der Reihe der Kupferlanthanoidborate CuHo2[B20 5]2: An Unexpected Structure Type in the Series of Copper  
 Abstract    Single crystals of the new compound CuHo2 [B20 5 ]2 were obtained by using a B20 3 flux technique with CuO and Ho20 3 at 1050 °C. X-ray investigations on single crystals led to the space group P 2,/c (Nr. 14) with lattice parameters a = 454.3(2); b = 726.0(4); c = 936.0(5) pm; ß = 90.77(1)°; Z = 2. The compound is isotypic to CuTb2[B20 5 ] 2 as well as to the gadolinite structure (FeY2 [BeSi05]2). The structure exhibits layer-like 2 [B20 5]4~, a two-dimensional anion consisting of edge sharing B 0 4 -tetrahedra, which form four-and eight-membered rings. The layers are connected by elongated C u06-octahedra and slightly distorted tetragonal LnOs-antiprisms. 
  Reference    (Z. Naturforsch. 53b, 5—8 [1998]; eingegangen am 23. Oktober 1997) 
  Published    1998 
  Keywords    Copper, Holmium, Borate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0005.pdf 
 Identifier    ZNB-1998-53b-0005 
 Volume    53 
4Author    Hk Wulff, Müller-BuschbaumRequires cookie*
 Title    Zur Kristallchemie der Kupfer(II)-ZinkteIlurate Cu5 Zn4Te3 0 18  
 Abstract    Cuj^Znj^TeOg, mit einer Notiz über Cul95Co1?5T e06 On the Crystal Chemistry of the Copper(II) Zinc Tellurates Cu5Zn4Te30 ,8 and Cu, 5Zn, 5Te06 with a Note on Cu, 5Co, 5Te06 L. Single crystals of Cu5Zn4Te30 , 8 (I), Cu, 5Zn, 5Te06 (II) and Cu, 5Co, 5Te06 (III) have been prepared and investigated by X-ray work. The structure of (I) was solved in the monoclinic space group C^-C2, a = 14.834(2), b = 8.801(1), c = 10.375(2) Ä, ß = 93.27(2)°, Z = 4. (II) and (III) crystallize with cubic symmetry, space group Th-Ia3, a{U) = 9.557(1), a(III) = 9.570(1) Ä, Z = 8. (I) shows a complicated structure formed by Te06 octahedra isolated from each other, Zn20 6 double tetrahedra and Zn20 8 double square pyramids. These polyhedra are incorporated into a network of edge and corner connected stretched C u06 octahedra. (II) and (III) are isotypic to Cu3T e06 and have a (Cu/M)30 6 octahedra network, statistically occupied by Cu2+ and Zn2+ or Cu_+ and Co2+. 
  Reference    (Z. Naturforsch. 53b, 53—57 [1998]; eingegangen am 27. Oktober 1997) 
  Published    1998 
  Keywords    Copper, Zinc, Cobalt, Tellurate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0053.pdf 
 Identifier    ZNB-1998-53b-0053 
 Volume    53 
5Author    S. Meyer, Hk Müller-BuschbaumRequires cookie*
 Title    Zur Kenntnis eines Vanadyl-Oxocuprat-Phosphats CaCu  
 Abstract    (V0)(P0 4) 2 mit Cu2+ auf Positionen der V 0 2+-Ionen und einer kupferreicheren Phase CaCulvt3(VO)o,87(P04)2 On an Vanadyl Oxocuprate Phosphate C aC u(V 0)(P 04)2 Containing Cu2+ at Positions of V 0 2+ Ions and a Copper Rich Phase CaCu, !3(VO)0 g7(P04)2 Single crystals of CaCu(V 0)(P04)2 (I) and CaCu,.i3(VO)o.87(P04)2 (II) have been prepared using solid state reactions in closed and evacuated quartz tubes. X-ray characterization led to 
  Reference    Z. Naturforsch. 53b, 521—526 (1998); eingegangen am 4. Februar 1998 
  Published    1998 
  Keywords    Calcium, Copper, Vanadyl-Phosphate, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0521.pdf 
 Identifier    ZNB-1998-53b-0521 
 Volume    53 
6Author    Markus Tampier, Dirk JohrendtRequires cookie*
 Title    B aC u 6G e2S8 -Ein Thiogermanat als Variante der L i3Bi-Struktur BaCu6Ge2S8 -A Thiogermanate as a Variant of the Li3Bi Structure  
 Abstract    BaCu6Ge2S8 was synthesized by direct reaction of the elements at 750°C and characteri­ zed by X-ray single crystal techniques. The thiogermanate crystallizes in a new orthorhombic structure type (a = 6.122(1) A, b = 12.084(3) A , c = 17.614(5) A; Pbcm, Z = 4). Isola­ ted [GeS4]4_ tetrahedra form a slightly distorted cubic face-centered (fee) arrangement. Ba-and Cu-atoms each occupy half the octahedral gaps (O G) of this " tetrahedra packing" . Fur­ ther Cu atoms fill the tetrahedral gaps (T G) completely. The compound can be written as Ba2<l/2 0 G,(Cu2)2<l/2<:)G)Cu8<7G)(GeS4)4 . Thus the structure o f BaCu6Ge2S8 can be derived from the Li^Bi type. The sulfur coordination o f the metal atoms (Cu tetrahedral or trigonal, Ba with CN 8) are realized by the spatial orientation of the [GeS4]4~ tetrahedra. Their centers nearly maintain the fcc-arrangement. This structure interpretation of BaCu6 Ge2S8 from the viewpoint o f a " filled tetrahedra packing" is discussed for further known thiogermanate compounds. 
  Reference    Z. Naturforsch. 53b, 1483—1488 (1998); eingegangen am 9. Juli 1998 
  Published    1998 
  Keywords    Chalcogenides, Germanium, Copper, Preparation, Crystal Structure 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1483.pdf 
 Identifier    ZNB-1998-53b-1483 
 Volume    53