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1993 (1)
1Author    Hans Wolkers, Ralf Stegmann, G. Ernot, Frenking, Kurt Dehnicke, D. Ieter Fenske, G.Erhard BaumRequires cookie*
 Title    Das Methylviologen-Radikalkation. Synthese, Kristallstruktur und ab Rechnungen von N,N'-Dimethyl-4,4'-bipyridinium-chlorid-dihydrat The Methylviologen Radical Cation. Synthesis, Crystal Structure and ab initio Calculations of N,N' -Dimethyl-4,4'-bipyridinium Chloride Dihydrate  
 Abstract    The title compound has been prepared by the reduction of N,N'-dimethyl-4,4'-bipyridinium dichloride with dilithium tritelluride in dimethylformamide solution. It forms deep blue crystal needles, which were characterized by a crystal structure determination. Space group Pna21; Z -8, 3450 observed unique reflections, R = 0.045. Lattice dimensions at -70 °C: a = 1707.6(8), b = 2323.9(11), c -664.6(3) pm. The N,N'-dimethyl-4,4'-bipyridinium radical cations are planar and form ion pairs in the lattice. The chloride ions together with the water molecules form an infinite network of hydrogen bridges along the crystallographic «-axis. The structural parameters of the radical cation are in excellent agreement with ab initio calculations. 
  Reference    Z. Naturforsch. 48b, 1341—1347 (1993); eingegangen am 25. Juni 1993 N 
  Published    1993 
  Keywords    N'-Dimethyl-4, 4'-bipyridinium Chloride Dihydrate, Synthesis, Crystal Structure 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1341.pdf 
 Identifier    ZNB-1993-48b-1341 
 Volume    48