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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 559 (1988), S. 17-26 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Oxoaluminate KLi4[AlO4]Transparent and colourless single crystals of Kli4[AlO4] have been prepared for the first time by heating mixtures of Li5AlO4 and K2O in the ratio 1:5 [Ni-tube, 950°C, 50 d]. The structure determination [four-circle diffractometer, MoKα, 1699 of 2427 I0 (hkl), R = 7.41%, Rw = 4.3%] proves the monoclinic space group P21/c with a = 554.4(3), b = 1544.1(7), c = 1103.3(6) pm, β = 109.71(5)°, parameters see text. Characterizing are “isolated” AlO4 groups with symmetry nearly Td. The Madelung Part of Lattice Energy, MAPLE, and Effective Coordination Numbers, ECoN, these via Mean Fictive Ionic Radii, MEFIR, have been calculated.
    Notes: Erstmals wurde KLi4[AlO4] durch Erhitzen innig verriebener Gemenge von Li5AlO4 und K2O im molaren Verhältnis 1:5 [Ni-Bömbchen, 950°C, 50 d] dargestellt. Wir erhielten farblose monokline Einkristalle (P21/c) mit a = 554,4(3), b = 1544,1(7), c = 1103,3(6) pm, β = 109,71(5)°.Die Struktur wurde mittels Vierkreisdiffraktometerdaten [MoKα, 1699 von 2427 I0(hkl), R = 7,41%, Rw = 4,3%] bestimmt, Parameter siehe Text. Charakteristisch sind “isolierte” AlO4-Gruppen, Symmetrie nahezu Td. Der Madelunganteil der Gitterenergie, MAPLE, und Effektive Koordinationszahlen, ECoN, diese über Mittlere Fiktive Ionenradien, MEFIR, wurden berechnet.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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