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1Author    Jörg Adel, Frank Weller, Kurt DehnickeRequires cookie*
 Title    Synthese und Kristallstrukturen der spirocyclischen Polyselenido-Komplexe [Na-15-Krone-5] 2 [M(Se 4 ) 2 ] mit M = Zink, Cadmium und Quecksilber Sythesis and Crystal Structures of the Spirocyclic Polyselenido Complexes [Na-15-Crown-5] 2 [M(Se 4 ) 2 ] with M = Zink, Cadmium, and Mercury  
 Abstract    The title compounds have been prepared by reactions of the metal acetates of zink, cadmium, and mercury with ethanolic solutions of sodium polyselenides in the presence of 15-crown-5. They form dark red crystals, which were characterized by their IR specta as well as by X-ray crystal structure determinations. All complexes [Na-15-crown-5] 2 [M(Se 4) 2 ] with M = Zn (1), Cd (2), Hg (3) crystallize isotypically in the space group C2/c with 4 formula units per unit cell. In the anions [M(Se 4) 2 ] 2 ^ the metal atoms are coordinated tetrahedrally by four selenium atoms of two Se 4 2 ~ units, thus forming a spiro-bicyclus. The complex cations [Na-15-crown-5] + have a Na---Se contact of approximately 299 pm with two selenium atoms of a MSe 4 group, allowing formulation of triple ion species. 
  Reference    Z. Naturforsch. 43b, 1094—1100 (1988); eingegangen am 4. Mai 1988 
  Published    1988 
  Keywords    Polyselenide Complexes of Zink, Cadmium, Mercury, Syntheses, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1094.pdf 
 Identifier    ZNB-1988-43b-1094 
 Volume    43