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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1011-1016 
    ISSN: 0044-2313
    Keywords: Lanthanoide ; gadolinium nitride oxide halide ; Na2Gd4Cl9NO ; crystal structure ; oxide nitride ; condensed clusters ; range of homogeneity ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Range of Homogeneity of Na2Gd4Cl9NONa2Gd4Cl9NO could be prepared as colourless compound by heating NaCl, GdN. Gd2O3 and GdCl3 in the ratio of 6 : 3 : 1 : 7 for several months at 810 K in a closed tantalum crucible (space group P21/m, a = 796,1(6) pm, b = 1112.3(5) pm, c = 916.1(7) pm, β = 106.45(6)°, Z = 2 and V = 778.0(9) · 106 pm3). The structure is built from chains of trans edge-shared [Gd4Z]-tetrahedra (Z = N or O). It is isotypic with Na2Pr4Cl9O2 and Na2Pr4Br9NO. X-ray structure determinations from two different single crystals give a hint to a range of homogeneity, Na2-xGd4Cl9N1-xO1+x, which conserves the purely salt like character of the compound via Na+ vacancies.
    Notes: Na2Gd4Cl9NO wurde durch Tempern von Nacl, GdN, Gd2O3 und GdCl3 im Verhältnis 6:3:1:7 bei 810 K im zugeschmolzenen Tantaltiegel in Form farbloser Kristalle erhalten (Raumgruppe P21/m, a = 796.1(6) pm, b = 1112.3(5) pm, c = 916.1(7) pm, β = 106.45(6)°, Z = 2, V = 778.0(9) · 106 pm3). Die Struktur ist aus Ketten trans-kantenkondensierter [Gd4Z]-Tetraeder (Z = N, O) aufgebaut Die Phase ist isotyp mit den bereits beschriebenen Verbindungen Na2Pr4Cl9O2 und Na2Pr4Br9NO. Röntgenstrukturanalysen zweier Kristalle geben Hinweise auf das Vorliegen einer Phasenbreite Na2-xGd4Cl9N1-xO1+x mit Erhalt des Charakters einer normalen Valenzverbindung.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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