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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 11 (1982), S. 295-308 
    ISSN: 1572-8927
    Keywords: Enthalpies ; dilution ; aqueous ; amides ; alcohols ; formamide ; dimethylformamide ; inositol ; cyclohexanol ; mannitol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of dilution of aqueous systems containing formamide, dimethyl-formamide, the mixture of these amides, and each amide separately with mannitol, inositol, and cyclohexanol have been determined at 25°C. The data have been treated in terms of the Savage-Wood additivity principle and in combination with literature data. New values for the methylene-amide, carbinol-amide, and amide-amide group interaction enthalpies are presented. These may be used with data on a wider variety of solute systems to obtain interaction enthalpies for new groups.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-8927
    Keywords: Salting-in ; freezing-point depression ; alcohols ; tetraalkyl-ammonium bromides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The freezing-point depression of the ternary systems tetraalkylammonium bromides-t-butanol-water for the first five homologs of R4NBr was measured. In the case of Bu4NBr, the effect of size of the alcohol (methahol ton-butanol) was also investigated. From the corresponding freezing-point data for the binary systems the apparent salting constants were calculated. The true salting constantsk s were obtained by extrapolation to infinite dilution. These are all very close to zero at the freezing temperature. From the corresponding thermochemical data the temperature dependence ofk s was calculated, and above 5°C all the R4NBr salts int-butanol; the salting-in increases with temperature and with the size of the hydrophobic cations. The scaled-particle theory is at present the only one which can account semiquantitatively for the temperature dependence of the salting-in effect.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1572-8927
    Keywords: Freezing points ; aqueous solutions ; group interactions ; ethyl acetate ; methyl formatemyo-inositol ; D-mannitol ; formamide ; trioxane ; dioxane ; acetamide ; hexamethylenetetramine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Freezing temperatures of dilute aqueous solutions of ethyl acetate and mixtures with myo-inositol, D-mannitol, formamide, 1,3,5-trioxane, 1,4-dioxane, acetamide, hexamethylenetetramine, and methyl formate have been measured. In addition, freezing temperatures of dilute aqueous solutions of methyl formate and mixtures with the above solutes have been measured. From these data, the pairwise molecular Gibbs energies of interaction between the molecules were calculated. Using the additivity principle, the pairwise functional group Gibbs energies of interaction were calculated for ester group interactions with a variety of other functional groups.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1572-8927
    Keywords: Heat capacity ; alcohols ; aqueous ; interactions ; inositol ; D-mannitol ; cyclohexanol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Heat capacities of binary and ternary aqueous systems containing myo-inositol, D-mannitol, and cyclohexanol have been measured and fitted to $$C_{p,\phi } = C_{p,\phi }^0 + c_2 m + c_3 m^2 $$ The data can be successfully treated by the Savage-Wood additivity principle and a useful predictive scheme for heat capacity interaction coefficients, c2, is now available.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1572-8927
    Keywords: Freezing points ; aqueous solutions ; amides ; polyols ; group interactions ; formamide ; dimethylformamide ; acetamide ; inositol ; mannitol ; cyclohexanol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Freezing temperatures of dilute aqueous mixtures of: formamide with myo-inositol, d-mannitol, and cyclohexanol; N,N-dimethylformamide with inositol, mannitol, and cyclohexanol; and acetamide with inositol and mannitol have been measured. These data have been analyzed to yield the pairwise molecular Gibbs energies of interaction between the molecules in an aqueous solution. Using the group additivity principle, the results yield the pairwise functional group Gibbs energies of interaction of the amide group with the hydroxyl group, G OH,CONH =−31 J-kg-mol−2.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of solution chemistry 14 (1985), S. 571-578 
    ISSN: 1572-8927
    Keywords: Freezing points ; aqueous solutions ; group interactions ; hexamethylenetetramine ; inositol ; mannitol ; cyclohexanol ; formamide ; acetamide ; dioxane ; trioxane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Freezing temperatures of dilute aqueous solutions of hexamethylenetetramine and mixtures of hexamethylenetetramine with myo-inositol, d-mannitol, cyclohexanol, formamide, acetamide, 1,4-dioxane, and 1,3,5-trioxane have been measured. These data yield pairwise molecular Gibbs energies of interaction between the molecules in an aqueous solution. Using the additivity principle, the results also yield the pairwise functional group Gibbs energies of interaction in an aqueous solution for the amine nitrogen with itself and with the hydroxyl, amide, ether, and methylene groups.
    Type of Medium: Electronic Resource
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