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  • Barium  (14)
  • oxide  (14)
  • Crystal Structure  (12)
  • 1990-1994  (34)
  • 1
    Electronic Resource
    Electronic Resource
    Synthese und Kristallstruktur des Nonaselenids [Sr(15-Krone-5)2]Se9 (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 416-420 
    Details
    ISSN: 0044-2313
    Keywords: Nonaselenide ; Synthesis ; 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 the Nonaselenide [Sr(15-crown-5)2]Se9The title compound was prepared by the reaction of excess selenium with strontium diselenide in DMF in the presence of 15-crown-5. [Sr(15-crown-5)2]Se9 forms black crystals, which are soluble in DMF. They were characterized by FIR spectroscopy and by an X-ray structure determination.Space group P21/n, Z = 4, 2 381 observed unique reflections, R = 0.073. Lattice dimensions at 19°C: a = 1 228.7, b = 1 893.4, c = 1 575.7 pm, β = 99.15°. The compound consists of [Sr(15-crown-5)2]2+ ions in which the strontium ion is coordinated by the oxygen atoms of the crown ether molecules in a sandwich-like fashion, and of Se92- ions with a chain structure, which has a topolocical resemblance with the bicyclic ion Se102-.
    Notes: Die Titelverbindung entsteht durch Einwirkung von überschüssigem Selen auf Strontiumdiselenid in Dimethylformamid (DMF) in Gegenwart von 15-Krone-5. [Sr(15-Krone-5)2]Se9 bildet schwarze, in DMF leicht lösliche Kristalle, die durch das FIR-Spektrum und eine röntgenographische Strukturanalyse charakterisiert werden.Raumgruppe P21/n, Z = 4, 2 381 beobachtete unabhängige Reflexe, R = 0,073. Gitterabmessungen bei 19°C: a = 1 228,7; b = 1 893,4; c = 1 575,7 pm, β = 99,15°. Die Verbindung besteht aus [Sr(15-Krone-5)2]2+-Ionen, in denen das Strontiumion sandwichartig von den O-Atomen der beiden Kronenethermoleküle umgeben ist, und kettenförmigen Se92--Ionen, die topologische Verwandtschaft zu dem bicyclischen Se102--Ion aufweisen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190229
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  • 2
    Electronic Resource
    Electronic Resource
    Das erste Erdalkalimetall-Argentato-Mercurat(II): BaAg2Hg2O4 (1991)
    Springer
    Monatshefte für Chemie 122 (1991), S. 915-920 
    Details
    ISSN: 1434-4475
    Keywords: Barium ; Silver ; Mercury ; Oxide ; High-pressure synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary BaAg2Hg2O4 was prepared by an oxygen high-pressure technique. Single crystal X-ray investigations led to tetragonal symmetry, space group D 4h 3 − P4/nbm;a=6.793;c=7.086 Å;Z=2. Hg2+ and Ag+ show dumb-bell like coordination by oxygen whereas Ba2+ ions are surrounded by 8 O2− forming distorted cubes. The BaO8-polyhedra distortions are discussed in respect to the incorporation of Hg2+ ions into the BaAg2O 4 2− network.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00823420
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  • 3
    Electronic Resource
    Electronic Resource
    Das erste gemischte Erdalkalimetall-Oxomercurat: Ba0.75Sr0.25HgO2 (1990)
    Springer
    Monatshefte für Chemie 121 (1990), S. 787-791 
    Details
    ISSN: 1434-4475
    Keywords: Barium ; Strontium ; Mercury ; Oxygen ; High-pressure synthesis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Ba0.75Sr0.25HgO2 was prepared for the first time by an oxygen high-pressure technique. Single cystal X-ray investigations lead to hexagonal symmetry, space group D 6 6 -P6322;a=6.897;c=11.986 Å;Z=6. Hg2+-ions show a dumbbell-like coordination by two O2−-ions. The alkaline earth ions Ba2+ and Sr2+ are surrounded by deformed trigonal O2−-prisms. Only one of the two Ba2+ point positions of the BaHgO2-type can be substituted by Sr2+. Polyhedra size and deformation are discussed in respect to the exchange of Ba2+ by Sr2+.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00808371
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  • 4
    Electronic Resource
    Electronic Resource
    Ein neues Oxoruthenat(IV): Ba4Ru1.1Mn1.9O10 mit statistischer Besetzung derM 4+-Metallpositionen (1990)
    Springer
    Monatshefte für Chemie 121 (1990), S. 635-640 
    Details
    ISSN: 1434-4475
    Keywords: Barium ; Ruthenium ; Manganese ; Oxygen ; Crystal structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary (I) Ba4Ru1.1Mn1.9O10 was prepared and investigated by single crystal X-ray technique. It crystallizes with orthorhombic symmetry, space group C 2v 12 -Cmc2i,a=5.74;b=13.15;c=12.86 Å;Z=4. (I) showsM 3O12-groups of face connectedMO6-octahedra. The octahedra are occupied in different manner by Ru4+ and Mn4+. It belongs to compounds withM 3O12-octahedra-tripel connected in isolated two-dimensional wave-like planes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809766
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  • 5
    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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  • 6
    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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  • 7
    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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  • 8
    Electronic Resource
    Electronic Resource
    Synthesen und Kristallstrukturen der Polytellurido-Komplexe [K(15-Krone-5)2]2[MTe7] mit M = Zn und Hg (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 500-506 
    Details
    ISSN: 0044-2313
    Keywords: Polytellurido Complexes of Zinc and Mercury ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structures of the Polyellurido Complexes [K(15-Crown-5)2]2[MTe7] with M = Zn and HgThe title compounds were obtained in the presence of 15-crown 5 from solutions of zinc and mercury acetate, respectively, in DMF by addition of a solution of K2Te3 in DMF at 0°C (M = Zn) and -50°C (M = Hg). They form black crystal needles with metallic luster. Their crystal structures were determined by X-ray diffraction. The structures of [K(15-crown-5)2]2ZnTe7 and [K(15-crown-5)2]2HgTe7 show two-dimensional disorder as evidence by diffuse scattering. The averaged structures that were determined with the Bragg reflexions correspond to space group Pbcn and have very similar lattice parameters. Nevertheless, the structures differ. [HgTe7]2- ions consist of two condensed five membered rings. They are arranged to form strands in the c direction; within of one strand the ions have a definite orientation, but in different strands two different orientations occur randomly. A [ZnTe7]2- ion can be thought of consisting of a Zn2+ ion, a Te42- ion bonded in a chelate manner and a Te32- ion bonded with one terminal Te atom to the Zn2+. The [ZnTe7]2- ions are associated to strands in the c direction with two different strand orientations occuring randomly.
    Notes: Die Titelverbindungen entstehen aus Lösungen der Acetate von Zink bzw. Quecksilber in DMF bei Anwesenheit von 15-Krone-5 nach Zugabe einer Lösung von K2Te3 in DMF bei 0°C (M = Zn) bzw. -50°C (M = Hg). Die Verbindungen bilden schwarze, metallisch glänzende Kristallnadeln, die wir durch röntgenographische Strukturanalysen charakterisiert haben. Die Kristallstrukturen von [K(15-Krone-5)2]2[ZnTe7] und [K(15-Krone-5)2]2[HgTe7] sind zweidimensional fehlgeordnet, wie die entsprechende diffuse Streuung zeigt. Die Überlagerungsstrukturen, die mit Hilfe der Braggschen Reflexe bestimmt wurden, entsprechen bei beiden Verbindungen der Raumgruppe Pbcn bei sehr Ähnlichen Gitterparametern. Trotzdem unterscheiden sich die Strukturen. Die [HgTe7]2--Ionen bestehen aus zwei kondensierten Fünferringen. Sie sind zu Strängen längs c angeordnet, wobei sie innerhalb eines Stranges eine definierte Orientierung haben, aber von Strang zu Strang eine von zwei entgegengesetzten Orientierungen statistisch vorkommt. Ein [ZnTe7]2--Ion kann man sich aufgebaut denken aus einem Zn2+-Ion, einem chelatartig gebundenen Te42--Ion und einem Te32--Ion, das über ein terminales Te-Atom an das Zn2+ gebunden ist. Die [ZnTe7]2--Ionen sind zu Strängen längs c assoziiert, wobei statistisch zwei Strangorientierungen vorkommen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190311
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  • 9
    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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  • 10
    Electronic Resource
    Electronic Resource
    Zur Kristallchemie von Ba3In2Zn5O11. Ein tOxoindat/zinkatsol;zinkat mit Zn10O20- und In4O16-Makropolyedern und erstmals O2- in tetraedrischer Koordination durch Zn2+ (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 559-562 
    Details
    ISSN: 0044-2313
    Keywords: Barium ; indium ; 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 Structure of Ba3In2Zn5O11. An Oxoindate/zincatesol;zincate with Zn10O20 and In4O16 Macropolyhedra with Zn2+ in Tetrahedral Coordination by O2-Ba3In2Zn5O11 was prepared for the first time by a flux technique and investigated by single crystal X-ray work. It crystallizes with cubic symmetry, space group T2d-F43m, a = 13.3588 Å, Z = 8. Zn2+ show tetrahedral coordination by O2-, forming Zn10O20 macropolyhedra. In addition the nZn/Osol;O part of the crystal structure is made up of Zn10O20 parts. Edge connection of four InO6 octahedra results in In4O16 groups. The crystal structure will be shown and discussed.
    Notes: Mit einer Schmelzmitteltechnik wurde erstmals Ba3In2Zn5O11 dargestellt und an Einkristallen röntgenographisch untersucht. Es kristallisiert kubisch, in der Raumgruppe T2d-F43m, mit a = 13,3588 Å und Z = 8. Zn2+ ist tetraedrisch von O2- koordiniert und bildet Zn10O20-Makropolyeder. Ferner wird der nZn/Osol;O-Teil der Kristallstruktur aus Zn10O20-Bausteinen zusammen-gesetzt. Die oktaedrisch koordinierten In3+-Ionen verknüpfen über Kanten zu In4O16-Baugruppen. Die Kristallstruktur wird vorgestellt und diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190322
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