Thermodynamic studies of molecular interactions in mixtures of o-toulidine with pyridine and picolines: Excess molar volumes, excess molar enthalpies, and excess isentropic compressibilities

Saini, Neeti; Yadav, J.S.; Jangra, Sunil K.; Sharma, Dimple; Sharma, V.K.

doi:10.1016/j.jct.2010.12.028

Cited by 71 publications

(12 citation statements)

References 19 publications

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“…17,18,29 The X 123 (n) (X = V or κ S ) (n = 0− 2) are parameters characteristic of a (1 + 2 + 3) mixture and were determined by fitting the measured V 123 E and (κ S E ) 123 data to eq 5 by least-squares method. The resulting parameters along with standard deviations are recorded in Table 4.…”

Section: -Ethyl-3-methylimidazolium Tetrafluoroborate [Emim][bf 4 ]mentioning

confidence: 99%

Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

2014

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Densities, ρ 123 , and speeds of sound, u 123 , of 1-ethyl-3-methylimidazolium tetrafluoroborate (1) + 2-methylaniline (2) + pyridine or α-, β-, or γ-picoline (3) ternary mixtures have been measured over the entire range of composition at 293.15 K, 298.15 K, 303.15 K, and 308.15 K using density and speed of sound analyzer (Anton Paar DSA 5000). The heat capacity, C p , of pure liquids pyridine and α-, β-, and γ-picoline have also been measured at 293.15 K, 298.15 K, 303.15 K, and 308.15 K using differential scanning calorimeter. The measured data have been employed to determine excess molar volumes, V 123 E and excess isentropic compressibilities,(κ S E ) 123 . The V 123 E and(κ S E ) 123 data have been fitted to Redlich−Kister equation to calculate ternary adjustable parameters and standard deviations. The thermodynamic properties of the ternary mixtures have been analyzed in terms of Graph (which deals with the topology of the constituent of mixtures) and Prigogine-Flory-Patterson (PFP) theories. It has been observed that Graph theory describes well V 123 E and (κ S E ) 123 data of the studied ternary ionic liquid mixtures. However, PFP theory correctly predicts the sign of V 123 E and (κ S E ) 123 data of the studied mixtures.

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Section: -Ethyl-3-methylimidazolium Tetrafluoroborate [Emim][bf 4 ]mentioning

confidence: 99%

Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

2014

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“…The densities ρ and speeds of sounds u of the purified liquids were measured by using a density and sound analyzer (Anton Paar DSA-5000) in the manner as described elsewhere. , The measurements were based on measuring the period of oscillation of a vibrating U-shaped hollow tube filled with liquid sample. The equipment was calibrated with double distilled, freshly degassed water at T = 293.15 K. The desired temperature of the cell was set in the temperature setting range which was controlled by built-in Peltier thermostat.…”

Section: Methodsmentioning

confidence: 99%

Thermodynamic Studies of Molecular Interactions in Mixtures Containing Tetrahydropyran, 1,4-Dioxane, and Cyclic Ketones

2017

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The densities ρ, speeds of sound u, and molar heat capacities C P of tetrahydropyran or 1,4-dioxane (1) + cyclohexanone or cycloheptanone (2) mixtures at 293.15, 298.15, 303.15, and 308.15 K, and excess molar enthalpies, H E at 308.15 K and atmospheric pressure 0.1 MPa have been measured over the entire composition range. The excess molar volumes V E, excess isentropic compressibilities κS E, and excess heat capacities, C P E of the studied mixtures have been determined using the measured experimental data. The observed V E, κS E, H E, and C P E data have been tested in terms of graph theory. The analyses of V E data by graph theory suggest that while tetrahydropyran or 1,4-dioxane exists as a mixture of monomer and dimer; cyclohexanone or cycloheptanone exists as a mixture of open and cyclic dimer. Further, (1 + 2) mixtures are characterized by interactions between oxygen atom/s and hydrogen atom of tetrahydropyran or 1,4-dioxane with hydrogen atom/s and oxygen atom of cyclohexanone or cycloheptanone. The quantum mechanical calculations and analysis of IR spectral data of (1 + 2) mixtures also support this viewpoint. It has been observed that graph theory correctly predicts the V E, κS E, H E, and C p E data of the present mixtures.

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“…6 O-Toluidine (O-TA) may cause rupture or enhance self-association in pyridine or substituted O-Toluidine which in turn would change their respective topology. 7 In the present study, our focus is on the study of liquid mixtures of substituted O-CA and O-TA with 2methylcyclohexanone because there have been a few studies on these mixtures. 8 It is expected that there will be a significant degree of H-bonding in these binary mixtures we report the densities, speeds of sound and viscosities for two binary systems (2MCH with O-CA and O-TA) at T = 303.15-318.15 K ambient atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Acoustic Studies on Various Binary Liquid Mixtures

kalimulla¹,

Das²,

Gowrisankar³

et al. 2019

RJC

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Acoustical and excess thermo physical properties of 2methylcyclohexanone with O-chloroaniline, O-toluidine explored at varying temperatures (303.15 -318.15 K) and close gas pressure by evaluating speed of sound (u), density (ρ) and viscosity (η) over the total vary of composition. The trend in the acoustical and excess thermo acoustic parameters exhibit the existence of hydrogen-bonded and charge transfer complexes between the binary system. The variation of the excess parameters both in sign and magnitude in the full range of composition investigated. These results were fitted to Redlich-Kister polynomial equations to estimate the binary coefficients and standard errors. The partial and excess partial molar volumes for each component at infinite dilution have been appraised and reported.

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Thermodynamic studies of molecular interactions in mixtures of o-toulidine with pyridine and picolines: Excess molar volumes, excess molar enthalpies, and excess isentropic compressibilities

Cited by 71 publications

References 19 publications

Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

Thermodynamic Properties of Ternary Mixtures Containing Ionic Liquid and Organic Liquids: Excess Molar Volume and Excess Isentropic Compressibility

Thermodynamic Studies of Molecular Interactions in Mixtures Containing Tetrahydropyran, 1,4-Dioxane, and Cyclic Ketones

Thermodynamic and Acoustic Studies on Various Binary Liquid Mixtures

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