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  • Ln3GeO4Cl5 (Ln = La—Nd)  (1)
  • Wiley-Blackwell  (1)
  • 1995-1999  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 2089-2094 
    ISSN: 0044-2313
    Keywords: Rare earth oxochlorometallates(IV) ; Ln3GeO4Cl5 (Ln = La—Nd) ; La3VO4Cl5 ; chemical transport ; HRTEM ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Electronmicroscopic Investigation of New Compounds Ln3MO4Cl5 (Ln = La—Nd; M = Ge, V)By heating mixtures of LnOCl, LnCl3 und GeO2 (2:1:1) in evacuated silica tubes (Pt-shells inside) the compounds Ln3GeO4Cl5 (Ln = La—Nd) were prepared. The case that the temperature of preparation (La: T = 900°C, 8d; Ce: T = 800°C, 9d; Pr, Nd: T = 650°C, 13 d) had to be reduced from Ln = La to Ln = Nd indicates a decreasing thermodynamic stability in this direction. The compound La3VO4Cl5 was prepared by heating (900°C, 8d) a mixture (2:1:1) of LaOCl, LaCl3 and VO2 and was investigated by electronmicroscopic techniques.
    Notes: Aus Gemengen von LnOCl, LnCl3 und GeO2 (2:1:1) wurden durch Erhitzen in evakuierten Quarzglasampullen (eingelegte Pt-Hülsen) die Verbindungen Ln3GeO4Cl5 (Ln = La—Nd) dargestellt. Die Notwendigkeit, die Darstellungstemperaturen in der Reihe Ln = La—Nd herabzusetzen (La: T = 900°C, 8 d; Ce: T = 800°C, 9d; Pr, Nd: T = 650°C, 13 d), deutet auf eine in dieser Richtung abnehmende thermodynamische Stabilität hin. Die Verbindung La3VO4Cl5 wurde aus einem Gemenge (2:1:1) von LaOCl, LaCl3 und VO2 erhalten (900°C, 8d) und elektronenmikroskopisch untersucht.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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