Molecular interactions between amine and cyclic ketones at different temperatures

Sankar, M. Gowri; Venkateswarlu, P.; Kumar, Kanthala Sampath; Sivarambabu, S.

doi:10.1007/s10973-013-3312-z

Cited by 21 publications

(4 citation statements)

References 34 publications

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“…The sign of excess molar volume, E depends upon the contraction and expansion of volume of the solvents as a result of mixing. The excess molar volume is the resultant contribution from several opposing effects, namely, chemical, physical, and structural Reddy et al [19], Sankar et al [20] and Gowrisanker et al [21]. The chemical or specific interactions result in volume contractions, leading to negative excess molar volume, and these include charge transfer complexes, dipole-dipole, dipole-induced dipole interactions and formation of H-bonding between component molecules.…”

Section: Resultsmentioning

confidence: 99%

Thermodynamic Study on Density and Viscosity of Binary Mixtures of Ethyl acetoacetate with (C4-C9) Aliphatic Ketones at (303.15 and 308.15) K

Kemeakegha¹,

Jumbo²

2020

IJISRT

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Investigation on Density (ρ) and viscosity (η) of various binary mixtures of ethylacetoacetate and straight chain aliphatic ketones (butan-2-one, pentan-2- one, hexan-2-one, heptan-2-one, octan-2-one and nonan2-one) have been carried out over the entire solvents composition range at temperatures of 303.15K and 308.15K. From the data obtained, the excess molar volumes (V E ), the excess viscosity (η E ) and excess Gibbs free energy of activation for viscous flow (ΔG*E) have been calculated from the experimental density and viscosity measurements at the working temperatures. Excess molar volumes, V E results are negative and positive over the entire range of mole fractions and become more positive as the chain length increases. The excess viscosities, η E were both positive and negative over the entire mole fraction range. While the observed excess Gibbs free energies of activation of viscous flow, ΔG*E data are positive throughout the entire mole fraction range of solvents composition at all investigated temperatures. These observed results of the excess functions have been interpreted in terms of possible molecular interactions in the binary mixtures.

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Section: Resultsmentioning

confidence: 99%

Thermodynamic Study on Density and Viscosity of Binary Mixtures of Ethyl acetoacetate with (C4-C9) Aliphatic Ketones at (303.15 and 308.15) K

Kemeakegha¹,

Jumbo²

2020

IJISRT

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“…Physical contributions which are non-specific forces of interaction, like dispersion forces or weak dipole-dipole interactions (due to hydrogen bond rupture) between unlike molecules in the mixtures, lead to positive values of V E . Meanwhile, positive values of excess molar volumes are also attributed to the structural breaking effects [25][26][27][28][29]. (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Density and excess properties of N-methyldiethanolamine (MDEA) with 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [hmim][FAP]

Akbar

Chemat

Appusamy

et al. 2015

J Therm Anal Calorim

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In the present work, new data on the densities and refractive indices for 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [hmim] [FAP] with N-methyldiethanolamine are reported for various concentrations and at temperatures (303.15-328.15) K. Excess molar volumes V E and excess refractive indices n E D were calculated from the experimental data. Refractive index values for the binary mixtures were predicted by using Lorentz-Lorenz, Gladstone-Dale and Eykman equations. Excess molar volumes showed positive trend, whereas excess refractive indices showed negative trend over the entire range of temperatures and concentrations studied in the present research.

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“…The sign of depends upon the contraction and expansion of volume of the liquids due to mixing. The excess molar volume is the resultant contribution from several opposing effects, namely, chemical, physical, and structural [30]. The chemical or specific interactions result in volume contractions, leading to negative excess molar volume, and these include charge-transfer complexes, dipoledipole, dipole-induced dipole interactions and formation of H-bonding between component molecules.…”

Section: Resultsmentioning

confidence: 99%

Thermoacoustic, Volumetric, and Viscometric Investigations in Binary Liquid System of Cyclohexanone with Benzyl Benzoate at T = 308.15, 313.15, and 318.15 K

Nayeem¹,

Kondaiah²,

Sreekanth³

et al. 2014

Journal of Thermodynamics

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Ultrasonic velocities (u), densities (ρ), and viscosities (η) of binary liquid mixtures of cyclohexanone with benzyl benzoate, including pure liquids, over the entire composition range have been measured at 308.15 K, 313.15 K, and 318.15 K. Using the experimental results, parameters such as molar volume (Vm), isentropic compressibility (ks), intermolecular free length (Lf), acoustic impedance (Z), internal pressure (πi), enthalpy (H), Gibbs free energy of activation of viscous flow (G*E), and excess/deviation properties of these including partial molar volumes (V-m,1 and V-m,2), excess partial molar volumes (V-m,1E and V-m,2E), partial molar volume of the components at infinite dilution (V-m,1∞, V-m,2∞), and excess partial molar volume at infinite dilution (V-m,1E,∞and V-m,2E,∞) have been computed. The observed negative values of VmE, Δks, LfE, and πiE and positive values of zE, HE, ΔG*E, Δη, and Δu for all the liquid mixtures studied clearly indicate the presence of strong dipole-dipole-type interactions, fitting of smaller molecules into bigger molecules. Further theoretical values of sound velocity and viscosity in the mixtures have been evaluated using various theories and have been compared with experimental values to verify the applicability of such theories to the systems studied.

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Molecular interactions between amine and cyclic ketones at different temperatures

Cited by 21 publications

References 34 publications

Thermodynamic Study on Density and Viscosity of Binary Mixtures of Ethyl acetoacetate with (C4-C9) Aliphatic Ketones at (303.15 and 308.15) K

Thermodynamic Study on Density and Viscosity of Binary Mixtures of Ethyl acetoacetate with (C4-C9) Aliphatic Ketones at (303.15 and 308.15) K

Density and excess properties of N-methyldiethanolamine (MDEA) with 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate [hmim][FAP]

Thermoacoustic, Volumetric, and Viscometric Investigations in Binary Liquid System of Cyclohexanone with Benzyl Benzoate at T = 308.15, 313.15, and 318.15 K

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