Thermodynamic and spectroscopic properties of 2-pyrrolidinones. 2. Dielectric properties of 2-pyrrolidinone in binary mixtures |
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Authors: | P Ruostesuo P Pirilä-Honkanen |
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Institution: | (1) Department of Chemistry, University of Oulu, SF-90570 Oulu, Finland |
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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. |
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Keywords: | Excess dielectric permittivities excess molar polarizations of 2-pyrrolidinone mixtures |
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