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Review of 'Dielectric properties of liquid systems: study of interactions in the systems carbon tetrachloride with benzene, toluene, and p-xylene'

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Dielectric properties of liquid systems: study of interactions in the systems carbon tetrachloride with benzene, toluene, and p-xylene

Abstract Intermolecular associations in liquid systems of non-polar and slightly polar compounds were studied through excess molar volumes (VME), and excess dielectric properties (εE and nD2E) for mixtures of carbon tetrachloride (CCl4) with benzene (C6H6), toluene (C6H5CH3), and p-xylene (p−(CH3)2C6H4). These excess properties were calculated from measurements of density (ρ), static permittivity (ε), and refractive index (nD) over the whole range of concentrations, at 298.15 K. The values of the excess dielectric properties for these mixtures were fitted in two different ways, one through least squares using the Redlich–Kister equation and the other using a model developed to explain deviations from ideality. The first fit was found to be descriptive while the second gave the equilibrium constant values for the interaction products actually formed in the mixtures and the respective electronic polarizabilities and dipole moments, indicating the existence of interaction products.

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    The present paper on the excess dielectric properties of three binary systems of CCL4 with C6H6, C6H5CH3 and C6H4(CH3)2 has looked systematically into the interesting problem of intermolecular interactions in liquid mixtures. The findings of the present paper are in tune with those from literature, where maximum interactions between the two species are seen to be around the equimolar concentration. The data has been collected and presented well with appropriate error estimates. This work is useful to those working in the area of intermolecular interactions in liquids.


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