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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1108-1112 
    ISSN: 0044-2313
    Keywords: Sodium tetra amido manganate(II) ; sodium manganese (II) amide ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na2Mn(NH2)4: A New Type of Layered StructureThe structure of Na2Mn(NH2)4 was solved by X-ray single crystal data including H-positions: P21/c, Z = 4, a = 6.331(1) Å, b = 14.542(3) Å, c = 7.212(1) Å, β = 116.29(1)°, Z(F20 ≥ 3σ = (F20)) = 1343, Z(parameters) = 96, R/RW = 0.023/0.029.The compound crystallizes in a new type of structure. Within layered blocks the amide ions are arranged with the motif of a hexagonal closest packing of spheres. Within these blocks alternating layers contain sodium in all octahedral sites and manganese in an ordered way in a quarter of tetrahedral sites.
    Notes: Die Struktur von Na2Mn(NH2)4 wurde röntgenograhisch über Einkristalldaten einschließlich der H-Lagen bestimmt: P21/c, Z = 4, a = 6,331(1) Å, b = 14,542(3) Å, c = 7,212(1) Å, β = 116,29(1)°, Z(F0) mit (F0)2 ≥ 3σ(F0)2 = 1343, Z(Parameter) = 96, R/RW = 0,023/0,029.Die Verbindung kristallisiert in einem neuen Strukturtyp. Die Amidionen bilden innerhalb von Schichtenpaketen das Motiv einer hexagonal dichtesten Kugelpackung. In ihr sind in einzelnen Ebenen abwechselnd entweder alle Oktaederlücken durch Natrium oder geordnet 1/4 der Tetraederlücken durch Mangan besetzt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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