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1999 (1)
1995 (1)
1Author    Heinrich-Schramm, W. E. Price, H.-D LüdemannRequires cookie*
 Abstract    Self-diffusion in ethanol/hexane and dimethylether/hexane mixtures of various compositions has been measured at 215-350 K and up to 200 MPa. Qualitative analysis of the results indicates that, as expected, hydrogen bonding retards the self-diffusion of ethanol in the mixture, especially at the low temperatures. Dimethylether shows a slight effect of dipole-dipole interactions on the self-diffu­ sion, as seen by a higher AE* value than for the alkane. However there is no significant difference in the pressure dependence for both mixtures. This is shown by considering the ratio of the two diffusion coefficients, which suggests that, contrary to what is observed for pure alcohols, pressure has little effect upon the hydrogen bonding of ethanol in the mixture. In additon, there is surprisingly little concentration dependence on the ratios for either mixture. 
  Reference    Z. Naturforsch. 50a, 149—154 (1995); received October 5 1994 
  Published    1995 
  Keywords    Binary mixtures, Self diffusion, High pressure 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0149.pdf 
 Identifier    ZNA-1995-50a-0149 
 Volume    50 
2Author    Z. NaturforschRequires cookie*
 Title    Structure of the 2-Pyrrolidinone Monohydrate  
 Abstract    The X-ray crystal structure of the 1:1 adduct shows a complicated network of water and 2-pyrrolidinone molecules where the carbonyl oxygen atom of 2-pyrrolidinone forms hy­ drogen bonds with protons of two separate water molecules and the NH proton of the 2-pyrrolidinone molecule interacts with the oxygen atom of a third water molecule. 
  Reference    Z. Naturforsch. 54b, 1598—1601 (1999); received July 27 1999 
  Published    1999 
  Keywords    2-Pyrrolidinone, Water, Crystal Structure, Hydrogen Bond, Binary Mixture 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1598.pdf 
 Identifier    ZNB-1999-54b-1598 
 Volume    54