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  • Articles  (7)
  • Calcium  (7)
  • Wiley-Blackwell  (7)
  • 1990-1994  (7)
  • 1970-1974
  • 1
    Electronic Resource
    Electronic Resource
    Synthese und Kristallstruktur von CaBiVO5 (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 521-524 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; bismuth ; vanadium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of CaBiVO5Single crystals of the hitherto unknown compound CaBiVO5 were prepared and investigated by X-ray work. It crystallizes with orthorhombic symmetry, space group D2h15—Pbca, a = 11.2022, b = 5.4283, c = 15.5605 Å, Z = 8. The crystal structure is characterized by layers of the edge-linked CaO7 polyhedra, isolated VO4 tetrahedra and an asymmetric surrounding of Bi3+ by oxygen.
    Notes: Die bisher unbekannte Verbindung CaBiVO5 wurde einkristallin dargestellt und röntgenographisch untersucht. Sie kristallisiert orthorhombisch in der Raumgruppe D2h15-Pbca mit a = 11,2022, b =5,4283, c = 15,5605 Å, Z = 8. Die Kristallstruktur ist durch Schichten aus CaO7-Polyedern, isolierte VO4-Tetraeder und asymmetrisch koordinierte Bi3+-Ionen charakterisiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190315
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von Ca3IrCuO6 (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 534-536 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; iridium ; copper ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Ca3IrCuO6Single crystals of Ca3IrCuO6 were prepared by a flux technique and investigated by single crystal X-ray work. It crystallizes with monoclinic symmetry, space group C2h6 - C12/c1; a = 9.032, b = 9.295, c = 6.466 Å, β = 91.35°, Z = 4. Ca3IrCuO6 is isotypic to Sr3IrCuO6. The square planare CuO4 polygones show probably a slightly deficit accompanied by an adequate part of iridium in the oxydation state Ir5+.
    Notes: Einkristalle von Ca3IrCuO6 wurden mit Hilfe von Schmelzmitteln dargestellt und röntgenographisch untersucht. Es kristallisiert mit monokliner Symmetrie in der Raumgruppe C2h6 - C12/c1, mit a = 9,032, b = 9,295, c = 6,466 Å, β = 91,35°, Z = 4. Ca3IrCuO6 ist mit Sr3IrCuO6 isotyp. Die planaren CuO4-Baugruppen zeigen wahrscheinlich ein geringes Defizit an Cu2+, welches durch einen adäquaten Teil von Ir5+ kompensiert wird.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190318
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  • 3
    Electronic Resource
    Electronic Resource
    Ein neues Alkali-Erdalkalimetall-Kupfer-Oxovanadat: Kba3Ca4Cu3V7O28Professor Harald Schäfer zum 80. Geburtstage gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 123-127 
    Details
    ISSN: 0044-2313
    Keywords: Potassium ; Calcium ; Barium ; Copper ; Vanadium Oxide ; Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A new Alkaline-Alkaline-Earth-Copper-Oxovanadate: Kba3Ca4Cu3V7O28.Single crystals of Kba3Ca4Cu3V7O28 were prepared by solid state reactions below the melting point of the reaction mixture. It crystallizes with hexagonal symmetry, space group C6v4-P63mc, a=11.160, c=12.428 Å, Z=2. Kba3Ca4Cu3V7O28 represents a new structure type with special coordination polyhedra around Ba2+, trigonal prisms and octahedra around Ca2+ and Cu2+ inside square pyramids. The crystal structure will be shown and discussed.
    Notes: Einkristalle von Kba3Ca4Cu3V7O28 wurden durch Feststoffreaktionen, knapp unterhalb des Schmelzpunktes, erhalten. Die Verbindung kristallisiert hexagonal, Raumgruppe C6v4-P63mc, a=11,160, c=12,428 Å, Z=2. Kba3Ca4Cu3V7O28 repräsentiert einen neuen Strukturtyp, mit speziellen Koordinationspolyedern um Ba2+, trigonalen Prismen und Oktaedern um Ca2+ und Cu2+ in tetragonal pyramidaler Koordination. Die Kristallstruktur wird vorgestellt und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190120
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  • 4
    Electronic Resource
    Electronic Resource
    Ein neues Erdalkalimetall-Oxoplatinat-Cuprat Ca3,5Cu0,5PtO6 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 617 (1992), S. 23-26 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; Platinum ; Copper ; Oxide ; Crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A new Alkaline-Earth Platinum Copper Oxide: Ca3.5Cu0.5PtO6Ca3.5Cu0.5PtO6 was prepared and investigated by single crystal X-ray work. (Space group C23—C12/m1; a = 9.0743; b = 9.2527; c = 6.4840 Å; β = 91.448°; Z = 4). The crystal structure of the previously unknown compound is closely related to the structure of Sr3PtCuO6 and Sr3IrCuO6 as well as the rhombohedral phases M4PtO6 (M = Ba, Sr, Ca). Typical features of the crystal chemistry are isolated chains of PtO6 octahedra, alternately allyed by square CuO4 polygones and trigonal prisms of O2- around Ca2+.
    Notes: Ca3,5Cu0,5PtO6 wurde dargestellt und an Einkristallen mit Röntgenmethoden untersucht. (Raumgruppe C23—C12/m1 a = 9,0743; b = 9,2527; c = 6,4840 Å; β = 91,448°; Z = 4). Diese bisher unbekannte Substanz bildet einen Strukturtyp, der eng mit Sr3CuPtO6 und Sr3CuIrO6 bzw. mit den rhomboedrischen Phasen M4PtO6 (M = Ba, Sr, Ca) verwandt ist. Charakteristische Bauelemente sind isolierte Ketten, welche aus PtO6-Oktaedern aufgebaut sind, die abwechselnd durch quadratische CuO4-Polygone und trigonale Prismen um Ca2+ miteinander verbunden werden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926170104
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Kristallstruktur von Ca2PbO4 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 607 (1992), S. 128-130 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; lead ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Structure of Ca2PbO4Single crystals of Ca2PbO4 were prepared by flux technique and investigated by X-ray methods. It crystallizes with orthorhombic symmetry, space group D2h9-Pbam. (a = 5.832; b = 9.766; c = 3.375 Å, Z = 2.) Ca2PbO4 belongs to the Sr2PbO4 type. It shows Ca2+ in a seven fold and Pb4+ in octahedral coordination.
    Notes: Einkristalle von Ca2PbO4 wurden mit einer Schmelzmitteltechnik dargestellt und röntgenographisch untersucht. Es kristallisiert orthorhombisch, Raumgruppe D2h9-Pbam mit a = 5,832; b = 9,766; c = 3,375 Å, Z = 2. Ca2PbO4 kristallisiert im Sr2PbO4-Typ, mit Ca2+ in siebenfacher und Pb4+ in oktaedrischer Koordination.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926070122
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  • 6
    Electronic Resource
    Electronic Resource
    Der Übergang von planaren zu tetraedrischen CuO4-Baugruppen in CaCuV2O7 (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 594 (1991), S. 119-126 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; Copper ; Vanadium ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Shift from Planar to Tetrahedric CuO4 Groups in CaCuV2O7Single crystals of CaCuV2O7 were prepared by solid state reaction closely below the melting point. It crystallizes with monoclinic symmetry, space group C2h4-P2 c; a = 10.01; b = 8.85; c = 10.19 Å; β = 91.03°; Z = 8. CaCuV2O7 represent a new structure type with VO4-tetrahedra, CaO6-octahedra, and CaO7-bipyramids. The surrounding of Cu2+ can be interpreted by a twisted planar coordination.
    Notes: Einkristalle von CaCuV2O7 wurden dicht unterhalb des Schmelzpunktes der Reaktionsmischung erhalten. Diese Verbindung kristallisiert monoklin, a = 10,01; b = 8,85; c = 10,19 Å; β = 91,03°; Z = 8. CaCuV2O7 repräsentiert einen neuen Strukturtyp mit VO4-Tetraedern, CaO6-Oktaedern und pentagonalen CaO7-Bipyramiden. Die Umgebung von Cu2+ kann als verdreht planar aufgefaßt werden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19915940114
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  • 7
    Electronic Resource
    Electronic Resource
    Eine weitere Oxovanadat-Phase mit Granatstruktur: Ca5Mg3ZnV6O24 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 615 (1992), S. 101-103 
    Details
    ISSN: 0044-2313
    Keywords: Calcium ; magnesium ; zinc ; vanadium ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: An Additional Oxovanadate Phase with Garnet Structure: Ca5Mg3ZnV6O24Single crystals of Ca5Mg3ZnV6O24 were prepared by solid state reactions some degree below the melting point of the reaction mixture. It crystallizes with cubic symmetry, space group Td6-I43 d with a = 12.429 Å, Z = 4. The crystal structure is nearly related to the Garnet structure showing Ca2+ within distorted cubes (C.N. = 8) of O2- on a partly unfilled position. the octahedra position are occupied by Mg2+ and Zn2+ statistically.
    Notes: Einkristalle von Ca5Mg3ZnV6O24 wurden durch Feststoffreaktionen dicht unterhalb des Schmelzpunktes der Reaktionsmischung erhalten. Diese Substanz kristallisiert mit kubischer Symmetrie, Raumgruppe Td6-I43 d mit a = 12,429 Å, Z = 4. Die Kristallstruktur ist eng mit der Granatstruktur verwandt und zeigt Ca2+ in gestörten Würfeln von O2- (C.N. = 8) auf einer teilweise unaufgefüllten Punktlage. Die oktaedrisch koordinierten Positionen sind mit Mg2+ und Zn2+ statistisch besetzt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926150920
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