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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 438-443 
    ISSN: 0044-2313
    Keywords: Praseodymium(III) Acetate ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Pr(CH3COO)3, an Anhydrous Rare-Earth Acetate with a Network StructurePr(CH3COO)3 may be prepared by dehydration of Pr(CH3COO)3 · 1,5 H2O at 180°C as an amorphous green powder. Single crystals were grown from the powder by addition of (NH4)CH3COO as „mineralisator“ at 180°C in a sealed glass ampoule. The crystal structure (tetragonal, P421c (no. 114), Z = 24, a = 2106.5(3), c = 1323.6(1) pm, Vm = 147.39(3) cm3/mol, R = 0.055, Rw = 0.029) was determined from four-circle-diffractometer data. The Pr3+ ions occupy three crystallographically independent positions and are surrounded by 9 and 10 oxygen atoms, respectively. Acetate ions connect the cations to a complicated three-dimensional network.
    Notes: Pr(CH3COO)3 entsteht beim Entwässern von Pr(CH3COO)3 · 1,5 H2O bei 180°C als amorphes Pulver. Einkristalle konnten daraus mit Hilfe von (NH4)CH3COO als „Mineralisator“ ebenfalls bei 180°C in einer geschlossenen Glasampulle gezüchtet werden. Die Kristallstruktur (tetragonal, P421c (Nr. 114), Z = 24, a = 2106,5(3), c = 1323,6(1) pm, Vm = 147,39(3) cm3/mol, R = 0,055, Rw = 0,029) wurde anhand von Vierkreis-Diffraktometerdaten bestimmt. Pr3+-Ionen besetzen drei unterschiedliche kristallographische Positionen und sind von 9 bzw. 10 Sauerstoffatomen umgeben. Acetationen verbinden die Kationen auf unterschiedliche Weise zu einem komplizierten dreidimensionalen Netzwerk.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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