Investigation of ketonic effect in molecular interactions of 2-methylcyclohexanone with aniline, N-methyl aniline and N,N-dimethyl aniline at various temperatures

Abstract

Densities (ρ) and speeds of sound (u) and viscosities (η) of binary mixtures of 2-methoxy aniline with aniline, N-methyl aniline and N, N-dimethyl aniline including those of pure liquids, over the entire composition range were measured at temperatures (303.15, 308.15 and 313.15) K and 101.3 kPa. Using the experimental data, the excess volume (V^E ) and excess isentropic compressibility (κ_s ^E ), deviation in viscosity (Δη), excess partial molar volumes, ${\overline{V}}_{\text{m,1}}^{\text{E}}$ and ${\overline{V}}_{\text{m,2}}^{\text{E}}$ and excess partial molar isentropic compressibilities, ${\overline{K}}_{\text{s,m,1}}^{\text{E}}$ and ${\overline{K}}_{\text{s,m,2}}^{\text{E}}$ of the components at infinite dilution were calculated. These values indicate the formation of intermolecular hydrogen bonding (N-H·····O = C) between the hydrogen atom of amine group of aniline /N-methyl aniline /N, N-dimethyl aniline and the oxygen atom of carbonyl group of 2-methylcyclohexanone in the binary liquid mixtures.

KEYWORDS:

• Charge-transfer complexes
• 2-methylcyclohexanone
• aniline and FTIR spectra

Disclosure statement

No potential conflict of interest was reported by the authors.