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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1185-1188 
    ISSN: 0044-2313
    Keywords: Sodium bromide hydroxide ; synthesis ; single-crystals ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na5Br(OH)4: Synthesis and Structure of a Compound in the System NaOH/NaBrThe pseudobinary system NaOH/NaBr is investigated by X-ray methods. The structure of the compound Na5Br(OH)4 was solved by single crystal data:Na5Br(OH)4: Pnma, Z = 8, a = 11.846(2) Å, b = 18.782(4) Å, c = 6.431(1) Å, Z(Fo) = 1 202 with (Fo)2 ≥ 3σ(Fo)2, Z(parameter) = 100, R/Rw = 0.030/0.035The compound crystallizes in a new type of structure. Pairs of octahedra around O by 5 Na and 1 H to [Na5(OH)]2 are orientated in such a way to one another that two ions OH- form a parallelogram hinting to unusual bent hydrogen bridge bonding.
    Notes: Das pseudobinäre System NaOH/NaBr wurde röntgenographisch untersucht und die Struktur von Na5Br(OH)4 mittels Röntgenstrukturanalyse an Einkristallen aufgeklärt:Na5Br(OH)4: Pnma, Z = 8, a = 11,846(2) Å, b = 18,782(4) Å, c = 6,431(1) Å, Z(Fo) = 1 202 mit (Fo)2 ≥ 3σ(Fo)2, Z(Parameter) = 100, R/Rw = 0,030/0,035.Auffällig an dem neuen Strukturtyp ist eine paarweise Anordnung von Oktaedern um O durch 5 Na und 1 H zu [Na5(OH)]2. Je zwei OH- sind so zueinander orientiert, daß auf ungewöhnlich gewinkelte H-Brücken auf zwei gegenüberliegenden Seiten eines Parallelogramms zu schließen ist.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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