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  • 1
    ISSN: 0044-2313
    Keywords: Zintl anions ; extraction of alloys ; homo atomic nine vertex polyhedra ; crystal structure ; paramagnetism ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Homoatomare neunkernige Polyeder mit Elementen der Gruppe XIV. Die Kristallstrukturen und paramagnetischen Eigenschaften von [K-(2,2,2-crypt)]6E9E9 · 1.5-Ethylendiamin · 0.5 Toluol, E = Sn and Pb1)Die Extraktionen von Legierungen der nominalen Zusammensetzung „KE2.25“ mit Ethylendiamin (en), (2,2,2)crypt und Toluol (tol) ergeben in guten Ausbeuten paramagnetische Verbindungen der Zusammensetzung [K-(2,2,2-crypt)]6E9E9 · 1.5 en · 0.5 tol (E = Sn (2 b), Pb (2 c)). Einkristall-Röntgenstrukturanalysen zeigen, daß zwei unterschiedliche E9 Cluster pro asymmetrischer Einheit der Elementarzelle vorliegen mit Konfigurationen von verzerrten, dreifach überkappten trigonal prismatischen Polyedern. 2 b: Raumgruppe P21/c (Nr. 14), Z = 4, a = 28.042(8), b = 23.527(5), c = 27.703(8) Å, β = 93.46(2)°; 2 c: Raumgruppe P21/c (Nr. 14), Z = 4, a = 28.356(8), b = 23.757 (5), c = 27.885(8) Å, β = 94.01(2)°.
    Notes: The extractions of alloys of the nominal composition “KE2.25” with ethylenediamine (en), (2,2,2)crypt, and toluene (tol) lead in good yields to paramagnetic compounds of the composition [K-(2,2,2-crypt)]6E9E9 · 1.5 en · 0.5 tol (E = Sn (2 b), Pb (2 c)). X-ray single crystal structure analyses show that two different E9 clusters per asymmetric unit are present with configurations of distorted tricapped trigonal prismatic polyhedra. 2 b: space group P21/c (No. 14), Z = 4, a = 28.042(8), b = 23.527(5), c = 27.703(8) Å, β = 93.46(2)°; 2 c: space group P21/c (No. 14), Z = 4, a = 28.356(8), b = 23.757(5), c = 27.885(8) Å, β = 94.01(2)°.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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