Excess Molar Volumes, Excess Molar Enthalpies and Excess Isentropic Compressibilities of 1-Methyl Pyrrolidin-2-one with Water and Propanols

Yameeka,; Dimple,; Yadav, J.S.; Sharma, V.K.

doi:10.1007/s10953-013-9963-3

Cited by 7 publications

(2 citation statements)

References 26 publications

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“…Figure S2 (Supporting Information) shows molar excess enthalpy ( H E ) data for 11 H 2 O–HBA mixtures obtained from the literature. − , The 11 H 2 O–HBA mixtures had minima in H E values in water-rich compositions (Figure S2). Minimum H E values of the H 2 O–HBA mixtures (− H max E -, Figure S2) are tabulated in Table .…”

Section: Results and Discussionmentioning

confidence: 99%

Does Synergism in Microscopic Polarity Correlate with Extrema in Macroscopic Properties for Aqueous Mixtures of Dipolar Aprotic Solvents?

et al. 2017

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Aqueous mixtures of dipolar aprotic solvents (acetonitrile, γ-valerolactone, γ-butyrolactone, tetrahydrofuran, 1,4-dioxane, acetone, pyridine, N-methyl-2-pyrrolidone, N,N-dimethylformamide, N,N-dimethylacetamide, and dimethyl sulfoxide) show synergism in microscopic polarity and extrema in macroscopic viscosity (η) and molar excess enthalpy (H) in water-rich compositions that correlate with solvent functional group electrostatic basicity (β). Microscopic polarities of aqueous solvent mixtures were estimated by measuring the spectral shift (λ) of 4-nitroaniline with UV-vis spectroscopy at 25 °C. Dynamic viscosities (η) and densities were measured for eight aqueous dipolar aprotic mixtures over the full range of compositions at (25 to 45) °C. The λ, η, and H values of the aqueous mixtures showed a linear trend with increasing electrostatic basicity of the solvent functional groups that is attributed to the size and strength of the hydration shell of water. Density functional theory (DFT) calculations were performed for 1:3 complexes (solvent: (HO)) and it was found that aqueous mixtures with high basicity have high binding energies and short hydrogen bonding distances implying that the size and strength of the hydration shell of water is proportional to functional group basicity. Consideration of functional group basicity of dipolar aprotic solvents allows one to relate synergism in microscopic polarity to extrema in macroscopic properties for a wide range of aqueous dipolar aprotic solvent mixtures.

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Section: Results and Discussionmentioning

confidence: 99%

Does Synergism in Microscopic Polarity Correlate with Extrema in Macroscopic Properties for Aqueous Mixtures of Dipolar Aprotic Solvents?

et al. 2017

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“…Thermodynamical investigations of excess molar volumes, V E ; excess isentropic compressibilities, κ S E ; excess molar enthalpies, H E data of NMP (1) + water or propanols (2); 2-Py (1) + benzene or toluene or xylenes (2) , have revealed that NMP or 2-Py exists as associated molecular entities. These observations are inconsistent with information inferred from NMR and X-ray studies of NMP , and ab initio calculations on the structure of 2-Py .…”

Section: Graph Theorymentioning

confidence: 99%

Excess Heat Capacities for Lactam + Chlorotoluene Binary Mixtures

et al. 2013

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The excess heat capacities, C P E of 1-methylpyrrolidin-2-one (1) + o-, m-, or p-chlorotoluene (2) and pyrrolidin-2-one (1) + o-, m-, or p-chlorotoluene (2) binary mixtures have been measured as a function of composition at (293.15, 298.15, and 303.15) K using microdifferential scanning calorimetry. The C P E data have been fitted to Redlich−Kister equation to calculate binary adjustable parameters and standard deviations. The measured properties of the studied mixtures have been analyzed in terms of Graph theory (which deals with the topology of the constituent of mixtures). It has been observed that Graph theory describes well the C P E data of the investigated binary mixtures.

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