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  • 1
    Electronic Resource
    Electronic Resource
    Volumes and heat capacities of mixtures of N,N-dimethylformamide and water at 298.15K (1977)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 22 (1977), S. 74-79 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60072a016
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  • 2
    Electronic Resource
    Electronic Resource
    Enthalpies of dilution and enthalpic interaction coefficients of several substituted amides dissolved in N-methylformamide (1987)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 32 (1987), S. 274-277 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je00048a036
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  • 3
    Electronic Resource
    Electronic Resource
    Enthalpies of interaction of urea in mixtures of water and N,N-dimethylformamide at 25°C (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 933-939 
    Details
    ISSN: 1572-8927
    Keywords: Enthalpy of interaction ; urea ; mixtures of water and N,N-dimethylformamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of dilution of urea dissolved in mixtures of water and N,N-dimethylformamide with mole fractions of water 0.33, 0.50 and 0.67, respectively, have been measured calorimetrically at 25°C. From these, enthalpic interaction coefficients were obtained. The present results are compared with those of urea dissolved in pure water and in pure N,N-dimethylformamide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650869
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  • 4
    Electronic Resource
    Electronic Resource
    Volumes and heat capacities of water andN-methylformamide in mixtures of these solvents (1977)
    Springer
    Journal of solution chemistry 6 (1977), S. 571-580 
    Details
    ISSN: 1572-8927
    Keywords: Densities ; apparent molar volumes ; heat capacities ; apparent molar heat capacities ; binary aqueous solutions ; N-methylformamide ; water ; amides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The densities of mixtures ofN-methylformamide (NMF) and water (W) have been measured at 5, 15, 25, 35, and 45°C, and the heat capacities of the same system at 25°C, both over the whole mole-fraction range. From the experimental data the apparent molar volumes (Φv) and heat capacities (Φc) of NMF and of water are evaluated. The relatively small difference between the partial molar volumes or heat capacities at infinite dilution and the corresponding molar volumes or heat capacities of the pure liquids for both NMF and water suggests that with regard to these quantities replacement of a NMF molecule by a water molecule or vice versa produces no drastic changes. The partial molar volume of water at infinite dilution in NMF is smaller than the molar volume of pure water, but the corresponding partial molar heat capacity is unexpectedly high.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655371
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  • 5
    Electronic Resource
    Electronic Resource
    Hydrophobic hydration of some different types of quaternary ammonium bromides in mixtures of water andN,N-dimethylformamide (1979)
    Springer
    Journal of solution chemistry 8 (1979), S. 25-34 
    Details
    ISSN: 1572-8927
    Keywords: Enthalpies of solution ; hydrophobic hydration ; quaternary ammonium bromides ; solvent mixtures ; water and DMF
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of solution of methyltributylammonium bromide, tetraethanolammonium bromide, and three azoniaspiroalkane bromides in binary solvent mixtures of water and N,N-dimethylformamide have been measured calorimetrically at 298.15oK over the whole mole fraction range. The results are interpreted in terms of a simple hydration model with two parameters and compared with those of the corresponding tetraalkylammonium bromides. Enthalpic studies with different types of quaternary ammonium bromides are useful in reexamining the assumptions and limitations of the hydration model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646806
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  • 6
    Electronic Resource
    Electronic Resource
    Interactions between terminally substituted amino acids in an aqueous and a non-aqueous environment. Enthalpic interaction coefficients in water and in N,N-dimethylformamide at 25°C (1985)
    Springer
    Journal of solution chemistry 14 (1985), S. 101-115 
    Details
    ISSN: 1572-8927
    Keywords: Solute-solute interaction ; enthalpies of dilution ; substituted amino acids ; enthalpic virial (interaction) coefficients ; group additivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of dilution of the N-acetyl amides of glycine, L-alanine, L-valine, L-leucine, and L-phenylalanine, dissolved in N,N-dimethylformamide (DMF) as a solvent have been measured at 25°C. The results obtained have been analyzed to give the enthalpic interaction (or virial) coefficients of the solutes and these are compared with information previously obtained in aqueous systems. There are marked differences in the interaction properties in the two solvents and, while the additivity approach of Savage and Wood is applicable to the solutes in water it is not suitable for representing the interactions in DMF. A correlation is presented between the enthalpic second virial coefficients in DMF and the propensity of side-chains to be in proximity in globular proteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648899
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  • 7
    Electronic Resource
    Electronic Resource
    Correlation of solute-solute interaction enthalpies in dimethylformamide by group additivity (1987)
    Springer
    Journal of solution chemistry 16 (1987), S. 367-371 
    Details
    ISSN: 1572-8927
    Keywords: solute-solute interaction ; enthalpic pair interaction coefficients ; group contributions ; group additivity ; excess groups additivity ; dipeptide amides ; dimethylformamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The Savage and Wood group additivity method has been applied to enthalpic pair interaction coefficients of more than 30 solutes dissolved in N,N-dimethylformamide. The results are not satisfactory. Better results are obtained by using a method which accounts for the differences in the numbers of molecular groups between solute and solvent molecules. With this excess group additivity method reasonable correlations are obtained even for solutes as large as dipeptide amides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647184
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  • 8
    Electronic Resource
    Electronic Resource
    Conformational aspects of the solvation of polyhydroxy compounds in binary mixtures of N,N-dimethylformamide and water (1988)
    Springer
    Journal of solution chemistry 17 (1988), S. 139-152 
    Details
    ISSN: 1572-8927
    Keywords: α-D-glucose ; β-D-fructose ; sucrose ; enthalpies of solution ; mutarotation ; preferential solvation ; hydrophobic hydration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of solution of β-D-fructose and sucrose in binary solvent mixtures of water and N,N-dimethylformamide (DMF) at 25°C over the whole mole fraction region are reported and compared to those of α-D-glucose. Because in these solvent systems the mutarotation of β-D-fructose is fast and accompanied by large enthalpy changes, the measured enthalpies of solution of this compound had to be corrected for this effect. The dependences of the enthalpies of solution on the composition of the solvent mixtures are considered to result from preferential hydrogen-bonding of the hydroxyl groups and hydrophobic hydration of the apolar parts of the surface of the solute molecule. Distinctions between the enthalpy of transfer curves are discussed in terms of conformational differences and additivity aspects in the solvation behavior of the compounds. The predominance of furanose forms of fructose in DMF and that of pyranose forms of the same solute in water are related to differences in solvation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00646433
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Enthalpies of interaction of N-acetyl amides of sarcosine and N-methyl-L-alanine dissolved in N,N-dimethylformamide at 25°C (1991)
    Springer
    Journal of solution chemistry 20 (1991), S. 445-453 
    Details
    ISSN: 1572-8927
    Keywords: Enthalpy of interaction ; peptide ; nonaqueous solution ; methylation of amide group
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Enthalpies of dilution of N-acetyl amides of sarcosine and N-methyl-L-alanine dissolved in N,N-dimethylformamide have been measured calorimetrically at 25°C. The enthalpic pairwise interaction coefficients calculated there from are negative, indicating a energetically favorable interaction. The results were used to make a comparison with other peptides with regard to the methylation of amide groups. Substituting a primary amide hydrogen by a methyl group gives a smaller positive change of the pairwise interaction coefficient than substituting a secondary amide hydrogen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650769
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  • 10
    Electronic Resource
    Electronic Resource
    Heat capacities and volumes of methanol+acetonitrile mixtures at 5 and 25°C (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 557-567 
    Details
    ISSN: 1572-8927
    Keywords: Methanol + acetonitrile mixtures ; densities ; partial molar volumes and heat capacities ; thermal expansion coefficients
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Densities and heat capacities of methanol + acetonitrile mixtures were determined over the whole composition range at 5 and 25°C. Apparent and partial molar volumes and heat capacities for both components of the mixture were calculated from these data. These functions for acetonitrile run monotonously over the whole composition range of the mixture at both temperatures, while those for methanol exhibit extrema (volumes-minimum and heat capacities-maximum) at high acetonitrile content. The reasons of the observed behavior of the system are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649564
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