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1995 (1)
1Author    J. Barthel, K. Bachhuber, R. BüchnerRequires cookie*
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 Abstract    ie le c tr ic R e la x a tio n o f N a C 1 0 4 S o lu tio n s in F o r m a m id e , N -M e th y lf o r m a m id e , a n d N ,N -D im e th y lf o rm a m id e Dedicated to Prof. Hitoshi Ohtaki on the occasion of his 60th birthday Complex permittivity spectra in the frequency range 0.95 < v/[GHz] < 89 for N,N-dimethylform-amide (DMF), N-methylformamide (NMF), formamide (FA) and their solutions of NaC104 are investigated to study the change of liquid structure and dynamics arising from the availability of one hydrogen-bond acceptor site together with no (DMF), one (NMF), or two (FA) donor sites on the same molecule. Three solvent relaxation processes are observed for NMF and two for FA and DMF. The relaxation parameters are used to determine solvation numbers. They show that ion-solvent interactions lead to a reduction of the average length of the H-bonded NMF chains but have only moderate influence on the FA structure. An additional solute relaxation process in DMF solutions is due to the diffusion-controlled formation and decomposition of solvent-shared ion pairs. 
  Reference    Z. Naturforsch. 50a, 65—74 (1995); received October 22 1994 
  Published    1995 
  Keywords    Dielectric relaxation, Formamides, Solvation, Solvent dynamics, Ion association 
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 TEI-XML for    default:Reihe_A/50/ZNA-1995-50a-0065.pdf 
 Identifier    ZNA-1995-50a-0065 
 Volume    50