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1992 (1)
1Author    S. Torre, P. FerloniRequires cookie*
 Title    Molecular Motion in Solid Tetramethylammonium Tetrafluoroborate  
 Abstract    Measurements of n B and NMR relaxation times, differential scanning calorimetry and thermomechanical analysis, carried out on polycrystalline (CH 3) 4 NBF 4 from room temperature to about 100 K, have permitted to discuss the crystal dynamics of this salt and to analyze the nature of the phase transition occurring at «150K. Moreover, by means of an evaluation of the n B quadrupole coupling constant, information about the position of the F atoms has been obtained. An explanation of the NMR data in terms of an order-disorder phase transition involving the F~ ions is given. 
  Reference    Z. Naturforsch. 47a, 721—727 (1992); received March 24 1992 
  Published    1992 
  Keywords    (CH 3 ) 4 NBF 4, Molecular motion, Phase transition 
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 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-0721.pdf 
 Identifier    ZNA-1992-47a-0721 
 Volume    47