Investigation of molecular interactions in binary mixtures of 2-methoxyaniline with isomeric cresols at various temperatures through thermo physical properties

Densities (ρ), viscosities (η), and speeds of sound (u) of binary mixtures of 2-methoxy aniline with isomeric cresols (ortho-cresol, meta-cresol and para-cresol) including those of pure liquids, over the entire composition range were measured at temperatures (303.15, 308.15 and 313.15 K) and atmosph...

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Bibliographic Details
Published in:Physics and chemistry of liquids 2020-05, Vol.58 (3), p.364-380
Main Authors: Naga Babu, P., Venkata Lakshmi, V., Gowrisankar, M., Raveendra, M.
Format: Article
Language:English
Subjects:
2-methoxyaniline and PFP theory
Aniline
Binary mixtures
Binary systems
Charge transfer
charge-transfer complexes
Complex formation
Composition
Cresols
Density
Dipole interactions
Hydrogen bonds
Molecular interactions
Physical properties
the speed of sound
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Summary:Densities (ρ), viscosities (η), and speeds of sound (u) of binary mixtures of 2-methoxy aniline with isomeric cresols (ortho-cresol, meta-cresol and para-cresol) including those of pure liquids, over the entire composition range were measured at temperatures (303.15, 308.15 and 313.15 K) and atmospheric pressure 0.1 MPa. Using the experimental data, V E , κ s E , , , and were calculated. The variation of these excess properties with the composition of the mixtures suggests hydrogen bond, dipole-dipole interactions and charge transfer complex formation between unlike molecules. The V E results have been analysed in the light Prigogine-Flory-Patterson theory. An analysis of each of the three contributions viz. interactional, free volume and characteristic pressure P* to V E shows that free volume contribution is negative for all binary systems. The interactional contribution and characteristic pressure P* contribution are positive for all the mixtures.
ISSN:0031-9104
1029-0451
DOI:10.1080/00319104.2019.1594225