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  • Chemistry  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 516 (1984), S. 201-206 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: About a Cubic Modification of CaTa2O6Single crystals of cub.-CaTa2O6 were prepared with a CO2-Laser-technique. X-ray investigations lead to a cubic symmetry (space group Pm3—Th1, a = 7.78 Å, Z = 4). Ta5+ and O2- occupy nearly the positions of this ions in the Perovskite structure. For this reason there is a similarity to Ca0.5TaO3. The decisive difference to the Ca0.5TaO3 is a ordered distribution of Ca2+.
    Notes: Mit CO2-Laser-Technik wurden Einkristalle von kub.-CaTa2O6 dargestellt. Mit Röntgenbeugungsmethoden wurde die Struktur bestimmt (a = 7,78 Å, Raumgruppe Pm3—Th1, Z = 4). Ta5+ und O2- besetzen nahezu die Atompositionen des Perowskits, daher besitzt kub.-CaTa2O6 große Ähnlichkeit mit Ca0,5TaO3. Die Ca2+-Ionen sind im Gegensatz zu Ca0,5TaO3 geordnet.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Trimethyl aluminum yields 2:1-complexes with 1,2-dimethoxyethane, 1-dimethylamino-2-methoxyethane, N,N,N′,N′-tetramethylethylenediamine and N,N,N′,N′-tetraethylethyleediamine. The Al atom has in these compounds the coordination number 4. Moreover could be isolated an 1:1-complex with 1-dimethylamino-2-methoxyethane, in which only the nitrogen atom is linked to the aluminum atom.
    Notes: Aluminiumtrimethyl bildet mit 1,2-Dimethoxyäthan, 1-Dimethylamino-2-methoxyäthan, N,N,N′,N′-Tetramethyläthylenndiamin und N,N,N′,N′-Tetraäthyläthylendiamin 2:1-Komplexe, in denen am Aluminiumatom die Koordinationszahl 4 vorliegt. Darüber hinaus konnte ein 1:1-Addukt mit 1-Dimethylamino-2-methoxyäthan in Substanz isoliert werden, in dem sich nur das Stickstoffatom des Liganden als Haftatom betätigt.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 312 (1970), S. 544-544 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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