Thermodynamics of amide + amine mixtures. 4. Relative permittivities of N,N-dimethylacetamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems and of N,N-dimethylformamide + aniline mixture at several temperatures. Characterization of amine + amide systems using ERAS

Abstract

Thermodynamics of amide + amine mixtures. 4. Relative permittivities of N,Ndimethylacetamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems and of N,N-dimethylformamide + aniline mixture at several temperatures. Characterization of amine + amide systems using ERAS

Thermodynamics of amide + amine mixtures. 5. Excess molar enthalpies of N,N-dimethylformamide or N,N-dimethylacetamide + N-propylpropan-1-amine, + N-butylbutan-1-amine, + butan-1-amine, or + hexan-1-amine systems at 298.15 K. Application of the ERAS model

“…In fact (see above), UCST(DMF + heptane) > UCST(DMA + heptane). This is also supported by calculations on entropy changes under the action of an electrostatic field and by the application of the Kirkwood-Fröhlich model[14].Therefore, we can conclude that the breaking of DMF-DMF interactions contributes more positively to E m H than the disruption of DMA-DMA interactions, and that the formation of interactions between unlike molecules should contribute more negatively to E m H in the case of DMF systems. The mentioned trend suggests that the variation of the contribution of amideamide interactions is predominant over the other two.…”

“…As the data available in the literature on excess molar enthalpies, E m H , for amine + amide mixtures is scarce [21][22][23], we continue this series of works reporting E m H values for DMF or DMA + DPA, or + DBA, or + BA or + HxA systems at 298.15 K. Finally, the systems are characterized in terms of the ERAS model, revisiting the previously reported parameters which were determined using volumetric data only [14].…”

“…In previous works, we have measured densities, speeds of sound and refractive indices of N,N-dimethylformamide (DMF) [11], or N,N-dimethylacetamide (DMA) [12] + Npropylpropan-1-amine (DPA) or + butan-1-amine (BA) at (293.15-303.15) K, and + Nbutylbutan-1-amine (DBA) or + hexan-1-amine (HxA) at 298.15 K. In addition, we have reported low-frequency permittivity measurements of the mentioned systems and of the DMF + aniline mixture at (293.15-303.15) K [13,14]. This database has been interpreted in terms of solute-solvent interactions and structural effects.…”

Volumetric and FT-IR Studies of the Binary Liquid Mixtures of Tributylamine and Alkyl Ester (C1–C5)

“…The results obtained are mostly essential for establishing the interactions among the components of binary mixtures. Recently, thermodynamic and partial molar functions of some amines have been studied by many researchers. − Lampreia et al studied the volumetric and acoustic functions of pseudo binary mixtures of water + 1,3-propanediol + 3-butoxypropan-1-amine from T = 283.15 to 303.15 K. Dubey et al measured the densities and speeds of sound for the binary mixtures of di- n -butylamine and diisopropylamine with 2-butanol and 2-pentanol at different temperatures ranging from 293.15 to 308.15 K over an entire composition range and at atmospheric pressure. Also, Ranjbar et al made experimental and computational studies of binary mixtures of isobutanol + cyclohexylamine at various temperatures (293.15–313.15 K).…”