Apparent molar volume and isentropic compressibilities of antidepressant drugs (Citalopram HBr and Escitalopram oxalate) with water

Devunuri, Nagaraju; Kancherla, Suman; Chennuri, Bharath Kumar; Gardas, Ramesh L.

doi:10.1016/j.molliq.2016.01.058

Cited by 31 publications

(9 citation statements)

References 20 publications

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“…Additionally, an increase in values of κ ø with increase of the following parameters is observed: temperature, hydroxyl number on the IL structure, and by changing the hydroxyl group position on the solvent from carbon 2 to 1. The dominant positive value of κ ø suggests prevalence of solvent intrinsic compressibility over the penetration effect. , …”

Section: Resultsmentioning

confidence: 99%

Liquid Densities and Speed of Sound for Ionic Liquid (2-HEAA and 2-HDEAA) + Alcohol (1-Propanol and 2-Propanol) Mixtures at T = (293.15–323.15 K) and Atmospheric Pressure

et al. 2019

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Liquid–liquid equilibrium data are widely used in many industrial sectors. For this reason, it is important to know thermodynamics binary mixture data to better understand molecular interactions between components. This work reports experimental density (ρ) and speed of sound (υ) data for 2-hydroxyethanolamine acetate + 1-propanol, 2-hydroxyethanolamine acetate + 2-propanol, 2-hydroxydiethanolamine acetate + 1-propanol, and 2-hydroxydiethanolamine acetate + 2-propanol binary mixtures, over a wide composition range, between 293.15 and 323.15 K, and at atmospheric pressure (101.3 kPa). For this purpose, a vibrating tube densitometer was used to perform density and speed of sound experimental measurements. From these data, important derivative properties have been calculated, such as isentropic compressibility (κs), apparent molar isentropic compressibility (κø), excess molar volumes (V m E), and apparent molar volume (V Ø).

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Section: Resultsmentioning

confidence: 99%

Liquid Densities and Speed of Sound for Ionic Liquid (2-HEAA and 2-HDEAA) + Alcohol (1-Propanol and 2-Propanol) Mixtures at T = (293.15–323.15 K) and Atmospheric Pressure

et al. 2019

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“…66 The small values of V ϕ at higher concentration of the solute can be a result of the stronger attractive interactions arising from the solvation of the ions, and the interactions are weaker at higher temperature leading to high V ϕ values. 67 In short, when the solute−solvent interaction is more, the lower will be the V ϕ values and vice versa. 68 Whereas in the case of higher IL concentration solutions, as it goes from 0.1 m to 0.4 m of the IL solutions, there is an increased trend of V ϕ values observed, resulting from the expansion in the volume of the mixture.…”

Section: Journal Ofmentioning

confidence: 99%

Apparent Molar Properties and Viscosity Studies of Ternary Systems Composed of Model Lignin and Xylose in DBU Based Ionic Liquid–DMSO Solutions

Jisha,

Gardas

2023

J. Chem. Eng. Data

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As the world aims for sustainable energy production, biomass dissolution and conversion to value-added products using ionic liquids (ILs), with or without cosolvents, are hot topics in the current scenario. This study focuses on the analysis of volumetric, acoustic, and viscosity properties of ternary systems comprising an IL, [DBU][OTf], an aprotic solvent, namely dimethyl sulfoxide (DMSO), and model biomolecules lignin or xylose in the temperature range of 293.15−333.15 K. Here we compare the properties of the model compounds lignin and xylose, a complex polymer responsible for the rigidity of the plants and the monomer unit of hemicellulose, respectively. Ternary systems of lignin or xylose (0.005, 0.010, 0.015, 0.020, 0.025, 0.030, and 0.035 m) were prepared using the binary solutions of IL in DMSO (0.1−0.4 m) which contributes to a sum of four ternary systems with lignin (I-D-L) and another four with xylose (I-D-X) as the solute. Apparent molar properties (V ϕ and K Sϕ ) were determined with density and speed of sound measurements, and the partial molar properties were evaluated with the help of the Redlich-Mayer equation. Solute−solute, solute−solvent, and solvent−solvent interactions were explained with the empirical parameters S V and S K obtained from the fitting equation. Dynamic and kinematic viscosities were also measured to understand the flow properties of the system. Intermolecular free length (L f ), relaxation time (τ), and acoustic impedance (Z) were also determined to elucidate the intermolecular interactions prevailing in these ternary systems. The experimental values of the dynamic viscosity were fitted well with the VTF model, and the Arrhenius plots were used for the calculation of the energy requirement (E η ) for the particles to move across each other in the ternary systems. This study enhances the ternary system database containing ionic liquids and biomolecules, benefiting biomass processing design, separation processes, and theoretical modeling of complex systems.

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“…The density of the ultrasonic sound and its speed are significant parameters which rely upon the construction of molecules and blends among them. Examination of ultrasonic characteristics is huge in exploration to break down the various properties of multi-fragment liquid mixes without bringing about any distortion [1][2][3]. Ultrasonic waves engendering in fluid combinations, cleansers, solids, polymers, suspensions then forth, is correct currently an awfully abundant unconditional adept measure for analysing the particular properties, molecular connections in numerous materials.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical studies of polyethylene glycols in aqueous biotin solutions at different temperatures and constant pressure

Chakraborty

Bhakri²,

Juglan³

et al. 2022

J. Phys.: Conf. Ser.

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Density and speed of sound of polyethylene glycols (polyethylene glycol 200; polyethylene glycol 400) in (0.000, 0.0024, 0.0032, and 0.0040) mol·Kg-1aqueous solutions of biotin at constant experimental pressure 0.1 MPa and temperature range (288.15 K, 298.15 K, 308.15 K and 318.15 K) have been obtained using Anton-Paar DSA 5000 M. These experimental data were used to calculate various acoustic and thermodynamic parameters such as intermolecular free length, acoustic impedance, adiabatic compressibility, Wada’s constant, Rao’s Constant and Vander Waal’s constant which gave the insight of the intermolecular reactions inside the ternary mixture of vitamin B7(Biotin) and polyethylene glycols (PEG 200/PEG 400).

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Apparent molar volume and isentropic compressibilities of antidepressant drugs (Citalopram HBr and Escitalopram oxalate) with water

Cited by 31 publications

References 20 publications

Liquid Densities and Speed of Sound for Ionic Liquid (2-HEAA and 2-HDEAA) + Alcohol (1-Propanol and 2-Propanol) Mixtures at T = (293.15–323.15 K) and Atmospheric Pressure

Liquid Densities and Speed of Sound for Ionic Liquid (2-HEAA and 2-HDEAA) + Alcohol (1-Propanol and 2-Propanol) Mixtures at T = (293.15–323.15 K) and Atmospheric Pressure

Apparent Molar Properties and Viscosity Studies of Ternary Systems Composed of Model Lignin and Xylose in DBU Based Ionic Liquid–DMSO Solutions

Physicochemical studies of polyethylene glycols in aqueous biotin solutions at different temperatures and constant pressure

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