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  • Barium  (3)
  • Springer  (3)
  • International Union of Crystallography
  • 1990-1994  (3)
  • 1970-1974
Collection
Keywords
Publisher
Years
Year
  • 1
    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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    Paper (German National Licenses)
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  • 2
    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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  • 3
    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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    Paper (German National Licenses)
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