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  • 1
    Electronic Resource
    Electronic Resource
    Solvation and hydrophobic hydration of different types of alkylamines inN,N-dimethylformamide and water mixtures (1981)
    Springer
    Journal of solution chemistry 10 (1981), S. 533-547 
    Details
    ISSN: 1572-8927
    Keywords: Enthalpies of solution ; enthalpies of transfer ; alkylamines ; DMF-water mixtures ; DMF-NMF mixtures ; hydrophobic hydration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of solution of twelve amines of different type have been determined at 25°C in mixtures of N,N-dimethylformamide and water over the whole composition range. The enthalpies of transfer from water to the mixtures deviate substantially from a linear dependence on the mole fraction of water. These deviations appear to contain additive contributions of the different alkyl groups. By application of a simple hydration model the enthalpic effect of hydrophobic hydration has been calculated for each amine. For alkylamines this is determined by the number and size of the alkyl groups present in the molecule. The contribution of each alkyl group is the same in primary, secondary and tertiary amines. Results for the different alkyl groups show a close relationship with values for alcohols obtained previously. Differences between alcohols and amines can be attributed to differences in the hydrophobic hydration of the parts of the solute molecules which are adjacent to the polar group. The influence of the polar group does not seem to extend beyond the second carbon atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646934
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermochemical behavior of mixtures ofN,N-dimethylformamide with dimethylsulfoxide, acetonitrile, andN-methylformamide: Volumes and heat capacities (1979)
    Springer
    Journal of solution chemistry 8 (1979), S. 593-600 
    Details
    ISSN: 1572-8927
    Keywords: Molar volume ; density ; molar heat capacity ; N,N-dimethylformamide ; dimethylsulfoxide ; acetonitrile ; N-methylformamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Densities and molar heat capacities have been measured for mixtures ofN,N-dimethylformamide with dimethylsulfoxide, acetonitrile, andN-methylformamide at 25°C over the complete mole fraction range. From these data the apparent molar volumes and heat capacities have been calculated for both components. These quantities, as a function of the mole fraction, deviate very little from their molar values, indicating that the mixtures can be regarded as almost ideal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00715999
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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