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  • 1
    Electronic Resource
    Electronic Resource
    Thermodynamic and spectroscopic properties of 2-pyrrolidinones. 2. Dielectric properties of 2-pyrrolidinone in binary mixtures (1990)
    Springer
    Journal of solution chemistry 19 (1990), S. 473-482 
    Details
    ISSN: 1572-8927
    Keywords: Excess dielectric permittivities ; excess molar polarizations of 2-pyrrolidinone mixtures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Dielectric permittivities of 2-pyrrolidinone - acetone, -dimethyl sulfoxide,-2-propanol, -dichloromethane and -water systems were measured as a function of mole fraction over the whole composition range at 30 and 50°C. The excess dielectric permittivities are predominantly negative for all the mixtures and the excess molar polarizations are negative except for 2-pyrrolidinone - water and 2-pyrrolidinone - dimethyl sulfoxide mixtures. The large negative excess quantities are indicative of the strong specific interactions between the like and unlike components of the solution mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00650380
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dielectric properties of binary mixtures of n-methylbenzenesulfonamide (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 229-238 
    Details
    ISSN: 1572-8927
    Keywords: Excess dielectric permittivities and molar polarization ; N-methylbenzenesulfonamide mixtures benzyl alcohol ; 1,4-dioxane ; 1,2-dichloroethane ; hexamethylphosphortriamide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The dielectric permittivities of binary mixtures of N-methylbenzenesul-fonamide (N-MBS) with benzyl alcohol, 1,2-dichloroethane, 1,4-dioxane and hexamethylphosphortriamide were measured as a function of mole fraction over the whole composition range at 30 and 50°C. The excess dielectric permittivities and the excess molar polarizations were also calculated. The excess dielectric permittivities εE and excess molar polarizations PE were found to be negative for N-methylbenzene-sulfonamide mixtures with benzyl alcohol and 1,4-dioxane, εE values were positive and PE values negative for mixtures with 1,2-dichloroethane, and εE and PE values were clearly positive for mixtures with hexamethylphosphortriamide. The results are discussed in terms of the strength of the dipolar and hydrogen-bonding interactions between the molecules in various binary mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647019
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Thermodynamic and spectroscopic properties of 2-pyrrolidinones. 3.For Part 2, see P. Ruostesuo and P. Pirilä-Honkanen, submitted for publication, J. Sol. Chem. NMR spectroscopic studies on 2-pyrrolidinone in different solvents (1989)
    Chichester : Wiley-Blackwell
    Journal of Physical Organic Chemistry 2 (1989), S. 565-572 
    Details
    ISSN: 0894-3230
    Keywords: Organic Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 1H, 13C, 15N and 17O NMR chemical shifts, 1JNH and 1JCH coupling constants and line widths (Δν1/2) of the 14N and 17O resonance lines were determined for 2-pyrrolidinone neat and for several 2-pyrrolidinone-solvent systems. The 17O NMR chemical shift of 2-pyrrolidinone was clearly most sensitive to the solvent effects, but changes with the solvent were also observable in the 13C (C=O) and 15N NMR chemical shifts, the 1JNH coupling constants and especially the line widths of the 14N and 17O resonance lines. In general, the results reflected a hydrogen bonding effect between the oxygen atom of 2-pyrrolidinone and the proton-donating solvents and a weak molecular interaction of the NH proton of 2-pyrrolidinone with the proton-accepting solvents. The results are compared with the NMR data for the corresponding binary mixtures of 1-ethyl-2-pyrrolidinone.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/poc.610020709
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    Paper (German National Licenses)
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