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1991 (1)
1Author    Dieter Fenske, Sylvia Magull, K. Urt DehnickeRequires cookie*
 Title    Synthese und Kristallstruktur von |Rb(18-Krone-6)|2IZn(Se4)(Se6)l Synthesis and Crystal Structure o f [Rb(18-Crown-6)]2[Zn(Se4)(Se6)]  
 Abstract    [Rb(18-crown-6)]-,[Zn(Se4)(Se6)] has been prepared by the reaction o f a lithium polyselenide solution in D M F with zinc acetate in the presence o f rubidium iodide and 18-crown-6. It forms dark red crystals, which were characterized by FIR spectroscopy as well as by an X-ray struc­ ture determination. Space group C 2/c, Z = 4, 3012 observed unique reflections, R = 0.073. Lattice dim ensions at —50 °C: a = 1963.1(14), b = 1125.9(9), c = 2060.3(16) pm,/? = 90.05(3) . The com pound has a com plex ionic structure, in which the zinc atom o f the anion [Zn(Se4)(Se6)]2" is coordinated tetrahedrally by four selenium atoms o f a Se42~ and a Se62~ unit in five and seven membered rings, respectively. The complex cations [Rb(18-crown-6)]+ have Rb • ■ • Se contacts o f 360.7 and 372.0 pm with selenium atoms o f the ZnSe4-ring. 
  Reference    Z. Naturforsch. 46b, 1011—1014 (1991); eingegangen am 6. Februar 1991 
  Published    1991 
  Keywords    Polyselenide Complex o f Zinc, Synthesis, IR Spectrum, Crystal Structure 
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 TEI-XML for    default:Reihe_B/46/ZNB-1991-46b-1011.pdf 
 Identifier    ZNB-1991-46b-1011 
 Volume    46