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  • 1990-1994  (83)
  • 1960-1964  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Beitrag zur Fluoreszens Seltener Erden (1962)
    Springer
    Naturwissenschaften 49 (1962), S. 180-180 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00640811
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  • 2
    Electronic Resource
    Electronic Resource
    Neue Verbindungen zum Ba8Pt4Y3O17,5-Typ Ba8Pt4Ln3O17,5 (Ln = Er, Yb, Tm) (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 584 (1990), S. 7-11 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Compounds of the Ba8Pt4Y3O17.5-Type: Ba8Pt4Ln3O17.5 · (Ln = Er, Yb, Tm)The hitherto unknown compounds (I):Ba8Pt4Er3O17.5, (II): Ba8Pt4Yb3O17.5 and (III): Ba8Pt4Tm3O17.5 were prepared and investigated by single crystal X-ray technique. They crystallize with cubic symmetry; space group Oh1-Pm3m, Z = 1. (I): a = 8.3441 Å; (II): a = 8.3145 Å; (III): a = 8.3296 Å. Pt4+ and Ln3+ ions show an octahedral and Pt2+ ions a planar coordination by oxygen. A typical feature of the crystal structure is an unoccupied space in the middle of the unit cell.
    Notes: Die bisher unbekannten Verbindungen (I): Ba8Pt4Er3O17,5, (II): Ba8Pt4Yb3O17,5 und (III): Ba8Pt4Tm3O17,5 wurden einkristallin dargestellt und röntgenographisch untersucht. Sie gehören zur Raumgruppe Oh1-Pm3m (I): a = 8,3441 Å; (II): a = 8,3145 Å; (III): a = 8,3296 Å; Z = 1. In diesen Verbindungen sind Pt4+- und Ln3+-Ionen oktaedrisch und Pt2+-Ionen planar durch Sauerstoff koordiniert. Die Kristallstruktur zeichnet sich durch einen Hohlraum in der Mitte der Elementarzelle aus.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905840102
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  • 3
    Electronic Resource
    Electronic Resource
    Ba5(Ir, Ru)3O12: Eine neue Kristallstruktur mit isolierten Oktaedertripeln (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 580 (1990), S. 71-77 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ba5(Ir, Ru)3O12: A New Crystal Structure with Isolated OctahedratripelA new compound, Ba5(Ir, Ru)3O12 was prepared and investigated by single crystal X-ray work (space group D2h16-Pnma; a = 10.853; b = 5.897; c = 19.819 Å; Z = 4). „Isolated“ octahedratripel of face connected [Ir/RuO6] groups are characteristic to this oxide. Ir and Ru are in statistic distribution. One of these metal positions contains an access of Ir, the other two of Ru, respectively. Coulomb Energy calculations show a dominant oxidation state +4 on one of the three Ir/Ru-point positions.
    Notes: Die neue Verbindung Ba5(Ir, Ru)3O12 wurde dargestellt und mit Röntgenmethoden an Einkristallen untersucht (Raumgruppe D2h16-Pnma; a = 10,853; b = 5,897; c = 19,819 Å; Z = 4). Flächenverknüpfte [Ir/RuO6]-Gruppen bilden Oktaedertripel, die „isoliert“ auftreten und ein typisches Strukturmerkmal darstellen. Ir und Ru sind statistisch verteilt, eine der Punktlagen enthält einen Überschuß an Ir, die zwei anderen an Ru. Berechnungen der Coulomb-Energie zeigen, daß eine der durch Edelmetalle besetzten Punktlagen die Ladung +4 enthält.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905800109
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  • 4
    Electronic Resource
    Electronic Resource
    Geordnete Oktaederbesetzung in Ba6La2Al1,5Fe2,5O15 (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 588 (1990), S. 97-101 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Ordered Occupation of Octahedra in Ba6La2Al1,5Fe2,5O15Ba6La2Al1.5Fe2.5O15 was prepared and investigated by X-ray single crystal technique. It crystallizes in the space group C6v4 - P63mc; a = 11.814, c = 7.1003 Å; Z = 2. The M3+O6 octahedra are occupied exclusively by Fe3+ ions, the M3+O4 tetrahedra in contrast are statistically filled by Fe3+ and Al3+ ions. Ba6La2Al1.5Fe2.5O15 is a partially ordered mixed crystal of the pure iron and aluminium compounds.
    Notes: Ba6La2Al1,5Fe2,5O15 wurde einkristallin dargestellt und mit röntgenographischen Methoden die Metallverteilung untersucht. Es kristallisiert in der Raumgruppe C6v4 - P63mc; a = 11,814, c = 7,1003 Å; Z = 2. Fe3+ besetzt ausschließlich Oktaederpositionen, die im Strukturtyp vorkommenden M3+O4-Tetraeder sind durch Al3+ und Fe3+ statistisch besetzt. Ba6La2Al1,5Fe2,5O15 ist ein partiell geordneter Mischkristall aus den reinen Eisen- und Aluminiumverbindungen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905880112
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  • 5
    Electronic Resource
    Electronic Resource
    Ein neues Strontium-Oxometallat Sr9Zn4Cu2O14, mit Sr2+ in flächenverknüpften OktaedernProfessor Dirk Reinen zum 60. Geburtstage am 5. Mai 1990 gewidmet (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 583 (1990), S. 17-23 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Strontium-Oxometallate: Sr9Zn4Cu2O14, Containing Sr2+ in Face Connected OctahedraSingle crystals of Sr9Zn4Cu2O14 were prepared in closed Cu-tubes. Modern X-ray investigations lead to monoclinic symmetry (space group C2h3—C2/m, a = 22.22; b = 3.61; c = 11.29; β = 98.6°; Z = 2). The crystal structure is characterized by a threedimensional Sr/O network, containing Sr2+ in octahedral and trigonal prismatic coordination. The SrO6 octahedra are partly face connected. Incorporated Zn2+ and Cu+ Ions show tetrahedral and dumbbell like coordination.
    Notes: In geschlossenen Cu-Rohren wurden Einkristalle von Sr9Zn4Cu2O14 dargestellt. Moderne Röntgenmethoden führen zu monokliner Symmetrie [Raumgruppe C2h3—C2/m; a = 22,22; b = 3,61; c = 11,29 Å; β = 98,6°, Z = 2]. Die Kristallstruktur enthält ein Sr/O-Gerüst mit Sr2+ in oktaedrischer und trigonal prismatischer Koordination. SrO6-Oktaeder treten partiell flächenverknüpft auf. In das Sr/O-Gerüst sind Zn2+-Ionen in Tetraederlücken und Cu+-Ionen mit hantelförmiger Koordination eingelagert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905830103
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  • 6
    Electronic Resource
    Electronic Resource
    Neue Verbindungen vom Typ M3Ln10O18 (M = Ba + Ca; Ln = Sc + Yb, Ho + Y, La + Y) Ein Beitrag zur Besetzung von Oktaedergerüst und TunnelstrukturProfessor Hans-Joachim Seifert zum 60. Geburtstage am 9. November 1990 gewidmet (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 589 (1990), S. 89-95 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Compounds of the M3Ln10O18-Type (M = Ba + Ca; Ln = Sc + Yb, Ho + Y, La + Y). A Contribution about the Occupation of the Octahedra Network and Tunnel StructureThe compounds (I): BaCa2Sc5Yb5O18, (II): BaCa2Ho5Y5O18 and (III): BaCa2La5Y5O18 were prepared and investigated by single crystal X-ray technique. I-III crystallizes in the space group C66—P63, Z = 2. I: a = 17.138; c = 3.217 Å; II: a = 17.765; c = 3.377 Å; III: a = 18.000; c = 3.446 Å. The biggest tunnels of the [Ln9O18]6- network are occupied by Ba2+ the smaller one by Ca2+ and Ln3+ in statistical distribution. Ln3+ on the tunnel positions are I: Yb3+, II: Ho3+ and III: La3+. Considering the comparable radii of Ho3+ and Y3+ the f-orbitals of Ho3+ probable the reason of occupying the tunnel positions with rare earth elements.
    Notes: Die Oxide (I) BaCa2Sc5Yb5O18, (II) BaCa2Ho5Y5O18 und (III) BaCa2La5Y5O18 wurden einkristallin dargestellt und mit Röntgenmethoden untersucht. Sie kristallisieren in der Raumgruppe C66—P63 mit Z = 2. I: a = 17,138; c = 3,217 Å; II: a = 17,765; c = 3,377 Å; III: a = 18,000; c = 3,446 Å. Ba2+ besetzt die großen, Ca2+ mit Ln3+ die kleinen Tunnel des [Ln9O18]6--Oktaedergerüsts. Ln3+ auf Tunnelpositionen ist in I: Yb3+, in II: Ho3+ und in III: La3+. Bei Radiengleichheit von Ho3+ und Y3+ entscheiden vermutlich die f-Orbitale zugunsten der Tunnelbesetzung.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905890110
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  • 7
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von (Ba0,5Sr0,5)Cu2V2O8 und Ba(CuMg)V2O8 (1991)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 602 (1991), S. 149-154 
    Details
    ISSN: 0044-2313
    Keywords: Alkaline earth ; copper ; vanadium ; oxide ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On (Ba0,5Sr0,5)Cu2V2O8 and Ba(CuMg)V2O8Single Crystals of (A): (Ba0.5Sr0.5)Cu2V2O8 and (B) Ba(CuMg)V2O8 were prepared by solid state reactions below the melting points of the starting mixtures. Both compounds were examined by X-ray technique. They crystallize in the space groups (A): 142d [No. 122]; a = 12.65; c = 8.18 Å; Z = 8; and (B): 141/acd [No. 142]; a = 12.50; c = 8.33 Å; Z = 8. In (A) are Ba2+ plus Sr2+ and in (B) are Cu2+ plus Mg2+ in statistical distribution. The square pyramidal Cu2+ coordination in (A) is changed to an octahedron in (B), by replacing Cu2+ by Mg2+.
    Notes: Einkristalle von (A): (Ba0,5Sr0,5)Cu2V2O8 und (B): Ba(CuMg)V2O8 wurden durch Feststoffreaktionen dicht unterhalb des Schmelzpunktes der jeweiligen Reaktionsgemenge erhalten. Zellparameter und Atompositionen wurden röntgenographisch bestimmt. Die Verbindungen kristallisieren in den Raumgruppen (A): 142d, [Nr. 122] mit a = 12,65; c = 8,18 Å; Z = 8; (B): 141/acd; [Nr. 142] mit a = 12,50; c = 8,33 Å; Z = 8. In (A) sind Ba2+ und Sr2+, in (B) Cu2+ und Mg2+ statistisch verteilt. Die tetragonal pyramidale Koordination von Cu2+ in (A) ändert sich durch den Einbau von. Mg2+ in (B) in eine gestreckt oktaedrische.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19916020116
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Kristallstruktur von Ba2ZnO3 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 17-20 
    Details
    ISSN: 0044-2313
    Keywords: Barium ; zinc ; oxygen ; 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 Ba2ZnO3Single crystals of Ba2ZnO3 were prepared by solid state reaction. It crystallizes monoclinic: space group C62h — C12/c1; a = 5.833; b = 11.376; c = 12.585 Å; β = 93.63°; Z = 8. The crystal structure is characterised by 1∞[ZnO3] chains along [100]. They are connected by Ba2+ in seven fold oxygen coordination.
    Notes: Ba2ZnO3 wurde durch Festkörperreaktion in einkristalliner Form dargestellt. Es kristallisiert in der Raumgruppe C62h — C12/c1; a = 5,833; b = 11,376; c = 12,585 Å, β = 93,63°; Z = 8. Die Kristallstruktur ist durch 1∞[ZnO3]-Ketten längs [100] gekennzeichnet. Diese werden durch Ba2+ (siebenfach durch O2- koordiniert) verknüpft.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926120104
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  • 9
    Electronic Resource
    Electronic Resource
    Ein neues Oxometallat mit Mangan(II): Ba5Mn4Nd8O21 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 612 (1992), S. 21-24 
    Details
    ISSN: 0044-2313
    Keywords: Barium ; manganese ; neodymium ; oxygen ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On a New Oxometallate of Manganese (II): Ba5Mn4Nd8O21Single crystals of Ba5Mn4Nd8O21 were prepared for the first time by CO2-Laser technique using H2-atmosphere. It was investigated by a single crystal X-ray diffractometer study. Ba5Mn4Nd8O21 crystallizes with tetragonal symmetry space group: C54h—I4/m; a = 14.2104 Å; c = 5.8581 Å; Z = 2. Mn2+ is found in square pyramids of oxygen.
    Notes: Ba5Mn4Nd8O21 wurde erstmals mit CO2-Lasertechnik in H2-Atmosphäre dargestellt und an Einkristallen röntgenographisch untersucht. Es kristallisiert tetragonal in der Raumgruppe C54h—I4/m; a = 14,2104 Å; c = 5,8581 Å; Z = 2. Mn2+ liegt in tetragonal pyramidaler Sauerstoffkoordination vor.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926120105
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  • 10
    Electronic Resource
    Electronic Resource
    Zur Kristallstruktur von Cu3NbTaO8 (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 613 (1992), S. 60-62 
    Details
    ISSN: 0044-2313
    Keywords: Copper ; tantalum ; niobium ; oxygen ; 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 Cu3NbTaO8Single crystals of Cu3NbTaO8 were prepared by solid state reaction. X-ray investigations led to triclinic symmetry, space group C1i—P1 with a = 5.179; b = 5.474; c = 6.003 Å; α = 72.85°; β = 83.39°; γ = 65.77°; Z = 1. Nb5+ and Ta5+ occupy one point position statistically. Both ions show an octahedral oxygen surrounding. Cu(1) is inside an elongated CuO6 octahedra and Cu(2) is coordinated by 5 O2- forming a distorted square pyramid. The polyhedra connection is shown and discussed.
    Notes: Einkristalle von Cu3NbTaO8 wurden durch Feststoffreaktion dargestellt. Die röntgenographische Untersuchung führte zu trikliner Symmetrie, Raumgruppe C1i  -  P1 mit a = 5,179; b = 5,474; c = 6,003 Å; α = 72,85°; β = 83,39°; γ = 65,77°; Z = 1. Nb5+ und Ta5+ besetzen eine Punktlage statistisch. Beide Ionen sind oktaedrisch von O2- koordiniert. Cu(1) zeigt ein stark gestrecktes CuO6-Oktaeder, während Cu(2) tetragonal pyramidal koordiniert ist. Die Polyederverknüpfung wird gezeigt und diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926130110
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