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1Author    Bernward Engelen, Willi Buchmeier, HeinzDieter LutzRequires cookie*
 Title    Zur Polymorphie des Cadmiumsulfits, Kristallstrukturen von CdS0 3 -I, CdS0 3 -II und CdS0 3 -III Polymorphic Cadmium Sulfites, Crystal Structures of CdS0 3 -I, CdS0 3 -II, and CdSO r III  
 Abstract    The crystal structures of the anhydrous cadmium sulfites CdS0 3 -I (¥2 x /c, Z=4), CdS0 3 -II (P2/C, Z=8), and CdS0 3 -III (R3, Z=18 for the hexagonal cell) have been determined by means of single crystal X-ray diffraction data. The final R for the 1475, 2349, and 2138 observed reflections are 0.040, 0.034, and 0.073. Coordination of Cd is trigonal-prismatic, a hitherto unknown coordination of Cd in salts of oxoacids, in CdS0 3 -I and CdS0 3 -II, and octahedral in CdS0 3 -III. The Cd0 6 -polyhedra are arranged in two-dimensional (CdS0 3 -I) and three-dimensional (CdS0 3 -II and CdS0 3 -III) networks. S0 3 2-groups act as monodentate and in CdS0 3 -I and CdS0 3 -II also as bidentate ligands. Cd—O distances range from 224.5(3) to 244.6(3) pm, with an average of 231.5 pm for the trigonal-prismatic and of 231.0 pm for the octahedral coordination. S—O dis-tances range from 152.3(3) to 155.3(3) pm with an average of 153.7 pm, the O —S—O angles from 99.2(2) to 106.7(3)° with an average of 103.2°. 
  Reference    (Z. Naturforsch. 42b, 37—41 [1987]; eingegangen am 2. Juli/16. September 1986) 
  Published    1987 
  Keywords    Cadmium Sulfites, Crystal Structure, Sulfites 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-0037.pdf 
 Identifier    ZNB-1987-42b-0037 
 Volume    42