Dielectric relaxation and dispersion studies of mixtures of 1-propanol and benzonitrile in pure liquid state at radio and microwave frequencies

Prajapati, A.N.; Vyas, Anil; Rana, V. A.; Bhatnagar, S. P.

doi:10.1016/j.molliq.2009.10.010

Cited by 30 publications

(19 citation statements)

References 28 publications

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“…We have conducted some calculations in order to determine the Kirkwood's correlation factor, K g , from data available in the literature on permittivity, density and refractive indices for methanol or 1-propanol + benzonitrile mixtures [111,112]. The equation used for K g is [113][114][115]:…”

Section: -Alkanol + Benzonitrilementioning

confidence: 99%

Thermodynamics of mixtures containing aromatic nitriles

González¹,

Alonso-Tristán

Hevia³

et al. 2018

The Journal of Chemical Thermodynamics

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The coexistence curves of liquid-liquid equilibrium (LLE) for the mixtures: phenylacetonitrile + heptane, + octane, + nonane, + cyclooctane, or + 2,2,4-trimethylpentane and for 3-phenylpropionitrile + heptane, or + octane are reported. Aromatic nitrile + alkane, + aromatic hydrocarbon or + 1 alkanol systems are investigated using a set of thermophysical properties: phase equilibria (solid-liquid, SLE, vapour-liquid, VLE and LLE), excess molar functions, enthalpies (E m H), isochoric internal energies (E Vm U), isobaric heat capacities (E pm C) and volumes (E m V), and the Kirkwood's correlation factor. Due to proximity effects between the phenyl and the CN groups, dipolar interactions between molecules of aromatic nitriles are stronger than those between molecules of isomeric linear nitriles. Dipolar interactions become weaker in the order: 3-phenylpropionitrile > phenylacetonitrile > benzonitrile. Benzonitrile + aromatic hydrocarbon mixtures are characterized by dispersive interactions and structural effects. The latter are more important in systems with phenylacetonitrile. Structural effects are also present in benzonitrile + n-alkane, or + 1-alkanol + mixtures. The systems mentioned above have been studied using DISQUAC. Interaction parameters for contacts where the CN group in The E m V curves of solutions with longer 1-alkanols are more poorly described, which has been explained in terms of the existence of structural effects.

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Section: -Alkanol + Benzonitrilementioning

confidence: 99%

Thermodynamics of mixtures containing aromatic nitriles

González¹,

Alonso-Tristán

Hevia³

et al. 2018

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

show abstract

“…The increase in the static dielectric constant with increasing solvent in a binary solvent mixture signies that spherical molecular aggregates transform to more correlated elongated aggregates resulting in a parallel orientation of the dipoles. 5 Though small, there is a difference in the static dielectric constant value for the three pentanol isomers when mixed with each alkylbenzoate for the same pentanol concentration and this difference is insignicant for the lower pentanol content. The static dielectric constant value for 2-pentanol and 3-pentanol is smaller when compared to that for 1-pentanol.…”

Section: Resultsmentioning

confidence: 99%

“…1,3 There have been a number of studies carried out to gain insight into molecular interactions in polar binary mixtures and the nature of the interactions present in binary mixtures is yet to be conrmed and is the topic of scientic debate. 4,5 In the liquid state, a considerable change in dielectric properties takes place upon mixing. 6 In binary mixtures, the molecular interaction caused by hydrogen bonding is complex due to the uncertainty of the involvement of a number of molecules and the identication of the particular bond.…”

Section: Introductionmentioning

confidence: 99%