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  • ccp anion packing with partially filled tetrahedral holes  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1843-1846 
    ISSN: 0044-2313
    Keywords: Mercury iodide telluride ; crystal structure ; ccp anion packing with partially filled tetrahedral holes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthese und Kristallstruktur von Hg3TeI4Die Struktur von kubischem Hg3TeI4 wurde aus Pulverdaten bestimmt. Auf die vier Positionen der kubisch-dichtesten Packung der Anionen sind 0.8 Te-Atome und 3.2 I-Atome statistisch verteilt. Die beiden Sorten von Tetraederlücken sind zu 2/4 bzw. 0.4/4 von Hg-Atomen besetzt. Mit einem Ordnungsmodell niederer Symmetrie kann die stöchiometrische Zusammensetzung erklärt und eine homogene Ladungsverteilung erreicht werden. Das Ordnungsmodell enthält Regionen der Struktur von rotem HgI2, die durch Fragmente vom SiS2-Typ miteinander verbunden sind.
    Notes: The structure of cubic Hg3TeI4 was determined from powder data. The four positions of the cubic closestpacking of the anions are statistically occupied by 0.8 Te-atoms and 3.2 I-atoms. The two types of tetrahedral holes are occupied to the extent of 2/4 and 0.4/4, respectively, by Hg-atoms. With an ordered model of lower symmetry, the stoichiometric composition can be explained and a homogeneous charge distribution can be achieved. The ordered model contains regions of the structure of red HgI2, which are connected by fragments of the SiS2-type.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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