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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 23-28 
    ISSN: 0044-2313
    Keywords: Nickel ; vanadium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Structure of Oxovanadates MV2O6 : NiV2O6Single crystals of NiV2O6 were prepared by solid state reactions below the melting point of the compound. It crystallizes with triclinic symmetry, space group Ci1 - P1; a = 7.128; b = 8.820; c = 4.793 Å; α = 90.24; β = 94.10 und γ = 102.15°; Z = 3. Ni2+ and two of the three vanadium point positions show an octahedral surrounding by O2- ions. The third V5+ position is tetrahedrally coordinated. The crystal structure will be shown and discussed.
    Notes: Einkristalle von NiV2O6 wurden mit Feststoffreaktionen nahe am Schmelzpunkt dieser Verbindung dargestellt. Mit Röntgen-Einkristalltechnik wurde die Struktur aufgeklärt. NiV2O6 kristallisiert triklin, Raumgruppe Ci1 - P1 mit a = 7,128; b = 8,820; c = 4,793 Å; α = 90,24; β = 94,10 und γ = 102,15° Z = 3. Ni2+ und zwei der drei Vanadiumpunktlagen sind oktaedrisch von O2- koordiniert. Die dritte V5+-Punktlage zeigt tetraedrische Koordination. Die Kristallstruktur wird vorgestellt und diskutiert.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 596 (1991), S. 29-33 
    ISSN: 0044-2313
    Keywords: Alkaline earth ; indium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Ba3In2O6-Type with Sc3+ in Square Pyramidal Coordination. About BaSr2ScInO6Single crystals of BaSr2ScInO6 were prepared by CO2 laser technique. X-ray investigations show tetragonal symmetry: space group D4h17-I4/mmm; a = 4.1020; c = 20.685 Å; Z = 2. It is isotypic to Ba3In2O6 and the phases Ln2-xSr1+xCu2O6-x/2, respectively. In3+ and Sc3+ are in statistically distribution and coordinated by square pyramids of oxygen.
    Notes: Mit CO2-Laser-Technik wurden Einkristalle von BaSr2ScInO6 dargestellt. Röntgenuntersuchungen führen zu tetragonaler Symmetrie: Raumgruppe D4h17 - I4/mmm; a = 4,1020; c = 20,685 Å; Z = 2. BaSr2ScInO6 ist mit Ba3In2O6 bzw. den Phasen Ln2-xSr1+xCu2O6-x/2 isotyp. In3+ und Sc3+ sind statistisch verteilt und werden von Sauerstoff tetragonal pyramidal koordiniert.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 343-346 
    ISSN: 0044-2313
    Keywords: Sodium ; barium ; nickel ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The First Alkalinc Alkaline Earth Oxoniccolate(II,III): NaBa2Ni22+Ni3+O6Single crystals of NaBa2Ni22+Ni3+O6 were prepared by solid state reaction. X-ray investigations led to orthorhombic symmetry, space group D2h23-Fmmm; a = 8.310; b = 11.220; c = 14.397 Å; Z = 8. Na+ is coordinated by six O2- in form of a trigonal prism and the two Ba2+ point positions show different coordination numbers C.N. = 6 + 4 and 8. The Ni2+ /Ni3+ ions are in square planar polygons, six of them are forming a so far unknown closed macro polyhedra.
    Notes: Einkristalle von NaBa2Ni22+Ni3+O6 wurden durch Feststoffreaktionen erhalten. Es kristallisiert orthorhombisch, Raumgruppe D2h23-Fmmm; mit a = 8,310; b = 11,220; c = 14,397 Å; Z = 8. Na+ ist von O2- in Form trigonaler Prismen sechsfach koordiniert und Ba2+ zeigt zwei Punktlagen mit Koordinationszahlen von C.N. = 6 + 4 und 8. Die Ni2+ /Ni3+-Ionen sind quadratisch planar koordiniert, sechs NiO4-Polygone verknüpfen zu einem für Nickel zum ersten Male beobachteten geschlossenen Riesenpolyeder.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 617-620 
    ISSN: 0044-2313
    Keywords: Potassium ; magnesium ; copper ; vanadium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal Structure of Potassium Magnesium Oxocuprate/-vanadate: KMg2Cu2V3O12.Single crystals of KMg2Cu2V3O12 were prepared by solid state reactions below the melting point of the reaction mixture (K2CO3, MgCO3, CuO, V2O5). It crystallizes with monoclinic symmetry space group C2h6—C2/c, a = 12.1592 Å, b = 12.7204 Å, c = 6.8557 Å, β = 111.73°, Z = 4. The structure type is characterized by VO4 tetrahedra, twisted CuO4 square units, MgO6 octahedra and a special 2 + 4 + 2 coordination around the potassium ion.
    Notes: Einkristalle von KMg2Cu2V3O12 wurden durch Feststoffreaktionen, dicht unterhalb des Schmelzpunktes des Reaktionsgemenges (K2CO3, MgCO3, CuO, V2O5), erhalten. Die Verbindung kristallisiert mit monokliner Symmetrie, Raumgruppe C2h6—C2/c, a = 12,1592 Å, b = 12,7204 Å, c = 6,8557 Å, β = 111,73°, Z = 4. Die Kristallstruktur ist durch VO4-Tetraeder, tordierte CuO4-Baugruppen, MgO6-Oktaeder und Kalium, in einer besonderen 2 + 4 + 2 Koordination charakterisiert.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1004-1006 
    ISSN: 0044-2313
    Keywords: Alkaline-Earth ; palladium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On an Alkaline-Earth Oxopalladate containing Pd6O12 Rings: CaBa2Pd3O6CaBa2Pd3O6 was prepared for the first time and investigated by X-ray single crystal technique. It is isotypic to NaBa2Cu3O6 and crystallizes with orthorhombic symmetry, space group D2h23-Fmmm, a = 8.717, b = 11.47, c = 14.933 Å; Z = 2. Typical features of the crystal structure are edge connected square planar PdO4 polygones, forming isolated Pd6O12 rings.
    Notes: CaBa2Pd3O6 wurde erstmals dargestellt und röntgenographisch an Einkristallen untersucht. Es ist isotyp mit NaBa2Cu3O6 und kristallisiert mit orthorhombischer Symmetrie, Raumgruppe D2h23-Fmmm, a = 8,717, b = 11,47, c = 14,933 Å; Z = 2. Charakteristische Strukturmerkmale sind kantenverknüpfte planare PdO4-Polygone, die isolierte Pd6O12-Ringe ausbilden.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 1137-1141 
    ISSN: 0044-2313
    Keywords: Cadmium ; mercury ; oxide ; high pressure ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: CdHgO2: An Oxomercurate related to the Crednerite StructureSingle crystals of CdHgO2 were prepared by oxygen high pressure technique (600°C, 3900 bar) and investigated by X-ray technique. It crystallizes with monoclinic symmetry, space group C2h3-C2/m; a = 5.933, b = 3.452, c = 5.875 Å, β = 91.26°; Z = 2. The Hg2+ ions show dumb-bell like coordination, Cd2+ an octahedral one. CdHgO2 shows strong relationship to the Crednerite structure. The orientation of the O—Hg—O dump-bells to the CdO6 octahedra layers is discussed with respect to related oxomercurates.
    Notes: CdHgO2 wurde mit Sauerstoff-Hochdrucktechnik (600°C, 3900 bar) einkristallin dargestellt und röntgenographisch untersucht. Es kristallisiert monoklin, Raumgruppe C2h3-C2/m mit a = 5,933, b = 3,452, c = 5,875 Å, β = 91,26° und Z = 2. Die Hg2+-Ionen zeigen eine hantelförmige, Cd2+ eine oktaedrische Koordination. CdHgO2 zeigt große Ähnlichkeit zur Crednerit-Struktur. Die Anordnung der O—Hg—O-Hanteln zu den CdO6-Oktaederschichten wird unter Bezug auf verwandte Oxomercurate diskutiert.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 607 (1992), S. 128-130 
    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.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 534-536 
    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.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 527-530 
    ISSN: 0044-2313
    Keywords: Barium ; rare earth ; zinc ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Crystal Chemistry of a New Barium Rare-Earth Oxozincate: Ba2Er2Zn8O13High temperature reactions led to single crystals of Ba2Er2Zn8O13. It crystallizes with orthorhombic symmetry, space group C122v—Cmc21, a = 6.276, b = 10.871, c = 10.195 Å, Z = 2. The hitherto unknown crystal structure shows Zn2+ with tetrahedral, Er3+ octahedral and Ba2+ cuboctahedral coordination by O2-. It will be shown that parts of the [Zn8O13] network are fragments of the ZnO structure showing O2- within a tetrahedral zinc coordination. A deficit of two O2- ions per unit cell is focused on two point positions.
    Notes: Durch Hochtemperaturreaktionen wurden Einkristalle von Ba2Er2Zn8O13 dargestellt und anschließend röntgenographisch untersucht. Die Verbindung kristallisiert in einem neuen Strukturtyp mit orthorhombischer Symmetrie, Raumgruppe C122v—Cmc21; a = 6,276; b = 10,871; c = 10,195 Å; Z = 2. Die bisher unbekannte Kristallstruktur zeigt Zn2+ in tetraedrischer, Er3+ in oktaedrischer und Ba2+ in kuboktaedrischer Koordination von O2-. Es wird gezeigt, daß das [Zn8O13]-Gerüst Fragmente der ZnO-Struktur mit O2- in tetraedrischer Zinkkoordination enthält. Ein Defizit von zwei O2 pro Elementarzelle verteilt sich auf zwei Punktlagen.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 609 (1992), S. 51-54 
    ISSN: 0044-2313
    Keywords: Titanium ; chromium ; niobium ; tantalum ; oxide ; structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Contribution on Ternary Oxides of the AMO4-Type (A = Ti3+, Cr3+; M = Nb5+, Ta5+)CrNbO4, CrTaO4, TiNbO4, and TiTaO4 were prepared by CO2-laser technique. X-ray single crystal investigations show a random distribution of the metal ions in Rutil type structure, space group D4h14-P42/mnm. Calculations of the free energy of reaction between Ti2O3 and Nb2O5 show higher stability of TiO2 beside NbO2. In TiNbO4 both metals exhibit the oxidation state +4.
    Notes: CrNbO4, CrTaO4 TiNbO4 und TiTaO4 wurden einkristallin mit CO2-Lasertechnik dargestellt und röntgenographisch untersucht. Sie kristallisieren mit statistischer Verteilung der Metallionen im Rutiltyp, Raumgruppe D4h14-P42/mnm. Berechnungen der freien Reaktionsenthalpie zeigen, daß Ti2O3 nicht neben Nb2O5vorliegt. In TiNbO4 haben beide Metallionen die Oxidationsstufe +4.
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