Solution behavior of iron(III)-N,N'-ethylene-bis-(salicylideneiminato)-chloride in aqueous methanol at 298.15, 303.15 and 313.15K

• Main Authors: Brahman Dhiraj, Sinha Biswajit
• Format: Article
• Language: English
• Published: Serbian Chemical Society 2014-01-01
• Series: Journal of the Serbian Chemical Society
• Subjects: partial molar volumes; viscosity B-coefficients; iron(III)-N, N'-ethylene-bis(salicylideneiminato)-chloride; aqueous methanol
• Online Access: http://www.doiserbia.nb.rs/img/doi/0352-5139/2014/0352-51391300082B.pdf

In this study partial molar volumes (φV0) and viscosity B-coefficients of iron(III)-N, N'-ethylene-bis(salicylideneiminato)-chloride, abbreviated as FeIII(salen)Cl, in different aqueous methanol solutions were determined from solution density and viscosity measurements at temperatures 298.15, 303.15, and 313.15 K under ambient pressure. Apparent molar volumes (φV) and densities (ρ) were used to calculate the apparent molar expansibilities (φE), the partial molar expansibilities (φE0) and the temperature dependence of the partial molar expansibilities (φE0) at constant pressure, (δφE0/δT)P of FeIII(salen)Cl solutions to reveal the nature of different interactions in the ternary solutions. The transition state theory was applied to analyze the viscosity B-coefficients on the basis of the activation parameters of viscous flow. The overall results indicated strong solute-solvent interactions between FeIII(salen)Cl and the solvent molecules, preferentially with water molecules and that FeIII(salen)Cl acts as a net structure promoter in the ternary solutions. UV-VIS absorption spectra of the ternary solutions also stand in support of the results obtained.