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Molecular interactions of VO(salen) Schiff base complex with an ionic liquid in dimethyl sulfoxide solutions

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Abstract

Solute–solvent interaction and preferential solvation of VO(salen) complex in the binary mixtures of an ionic liquid (IL) + organic solvent were studied. For this purpose, density, viscosity, and electrical conductivity of ternary VO(salen) + 1-pentyl-3-methylimidazolium bromide ([PnMIm]Br) + DMSO mixtures were measured at T = (288.15 to 318.15) K. From density data, standard partial molar volumes (V 0 ϕ ), partial molar expansibilities (E 0 ϕ ), and Hepler constants were calculated. The obtained viscosity B-coefficients and their temperature dependency were used to interpret the structure-making or structure-breaking tendency of the complex. To verify the volumetric and viscometric results, limiting molar conductivities (Λ 0) and ion association constants (K A ) of the IL in VO(salen) + DMSO mixtures were computed. All the obtained parameters were used to discuss the solute-solvent interactions of the mixture.

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Authors and Affiliations

  1. Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

    Hemayat Shekaari

  2. Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran

    Amir Kazempour

  3. Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran

    Ayyob Soltanpour

Authors
  1. Hemayat Shekaari
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  2. Amir Kazempour
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  3. Ayyob Soltanpour
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Correspondence to Hemayat Shekaari.

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Shekaari, H., Kazempour, A. & Soltanpour, A. Molecular interactions of VO(salen) Schiff base complex with an ionic liquid in dimethyl sulfoxide solutions. Ionics 21, 2557–2565 (2015). https://doi.org/10.1007/s11581-015-1449-4

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  • DOI: https://doi.org/10.1007/s11581-015-1449-4

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