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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 597 (1991), S. 19-26 
    ISSN: 0044-2313
    Keywords: Oxocobaltate(III) ; lithium ; sodium ; preparation ; single crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na2Li3CoO4, the First Quaternary Oxocobaltate(III) of the Alkali MetalsFor the first time we obtained Na2Li3CoO4 by annealing intimate mixtures of Co3O4, Na2O2, and Li2O [Co : Na : Li = 1 : 2.2 : 10.1; 760°C; 21 d; Ag-tube] in form of transparent red single crystals. Structure Refinement [four-circle diffractometer data; AED2; MoKα-radiation; 1016 Io(hkl); R = 2.6%; Rw = 2.0%; space group Pnnm; Z = 4; a = 818.7(3), b = 799.4(2), c = 655.1(2) pm] confirms the isotypism to Na2Li3GaO4 [2] and Na2Li3FeO4 [3]. Mean Fictive Ionic Radii, MEFIR, Effective Coordination Numbers, ECoN, and the Charge Distribution were calculated. The isotypism of Na2Li3CoO4 and Na2Li3GaO4 is compared graphically.
    Notes: Erstmals wurde mit Na2Li3CoO4 ein quaternäres Oxocobaltat(III) der Alkalimetalle durch Tempern inniger Gemenge der Oxide Co3O4, Na2O2, und Li2O [Co : Na : Li = 1 : 2,2 : 10,1; 760°C; 21 d; Ag-Bombe] in Form transparenter roter Einkristalle dargestellt. Die Strukturaufklärung [Vierkreisdiffraktometerdaten; AED2; MoKα-Strahlung; 1016 Io(hkl); R = 2,6%; Rw = 2,0%; Raumgruppe Pnnm; Z = 4; a = 818,7(3), b = 799,4(2), c = 655,1(2) pm] belegt die Isotypie zu Na2Li3GaO4 [2] und Na2Li3FeO4 [3]. Mittlere Fiktive Ionenradien, MEFIR, Effektive Koordinationszahlen, ECoN, sowie die Ladungsverteilung wurden berechnet. Ein Isotypievergleich mit Na2Li3GaO4 erfolgt graphisch.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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