1. Acoustic, volumetric and FTIR study of binary liquid mixtures of 2-methyl cyclohexanone with amides.
- Author
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Yella Reddy, P., Srinivasa Krishna, T., Gowrisankar, M., Siva Kumar, K, and Kumar, Chebolu Naga Sesha Sai Pavan
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MOLECULAR volume , *LIQUID mixtures , *BINARY mixtures , *AMIDES , *VISCOUS flow , *CHEMICAL bonds - Abstract
Curves of excess molar volume (V E) with mole fraction for the binary mixtures of 2-methylcyclohexanone with N,N-dimethylformamide (!); N-methylformamide (,) and formamide (▲) at 303.15 K. • Density, Speed of sound and Viscosity have been measured of amides and 2-methyl cyclohexanone between 303.15 and 313.15 K. • The effect of temperature has been discussed on excess derived properties in terms of intermolecular interactions. • PFP theory confirmed the molecular interactions due to free volume. • The influence of intra molecular hydrogen bond was analyzed by thermophysical properties and FT-IR spectra. Densities, speeds of sound, and viscosities at various temperatures were determined for the systems: 2-methylcyclohexanone (2-MCYH) + formamide (F), N-methylformamide (NMF) and N, N-dimethylformamide (DMF). From the experimental results, Excess molar volume V m E , Excess isentropic compressibility κ s E , deviation in viscosity Δ η and excess Gibbs energy of activation of viscous flow G*E , Excess partial molar properties at infinite dilution V ¯ m , 1 ° E , V ¯ m , 2 ° E , K ¯ s , m , 1 ° E and K ¯ s , m , 2 ° E were calculated. There is evidence of complex formation between unlike molecules. FT-IR properties have been carried out to study the specific interaction, such as the formation of the hydrogen bond between unlike molecules in the binary liquid mixtures, a good agreement is observed among the excess parameters and FT-IR spectroscopic properties. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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