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1992 (1)
1Author    T. Radnai, H. OhtakiRequires cookie*
 Title    Intramolecular and Liquid Structures of Tetramethylurea Studied by Means of X-Ray Diffraction  
 Abstract    The intramolecular and liquid structures of tetramethylurea (TMU) were investigated by the liquid x-ray diffraction method. It is confirmed that in the liquid state the four methyl groups are out of the plane which is constructed by the O, C, and the two N atoms, the molecular structure being similar to what had been found in the gas phase. All structural parameters are in good agreement with those of TMU determined in the gas phase and with those of amide derivatives in the liquid phase. The liquid is characterized by a random distribution of molecules as predominant, but a weak molecular ordering characterized by approximately two intermolecular nonbonding Me • • • O dis-tances at 340 pm is proposed. 
  Reference    Z. Naturforsch. 47a, 1003—1010 (1992); received May 20 1992 
  Published    1992 
  Keywords    Tetramethylurea, Liquid x-ray diffraction, Liquid structure, Molecular structure, Non-aqueous solvent 
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 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-1003.pdf 
 Identifier    ZNA-1992-47a-1003 
 Volume    47