Temperature effect on the molecular interactions between two ammonium ionic liquids and dimethylsulfoxide

Varadhi Govinda, Pankaj Attri, P. Venkatesu, P. Venkateswarlu

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

To understand the molecular interactions between newly synthesized ammonium ionic liquids (ILs) and highly polar solvent dimethylsulfoxide (DMSO), precise measurements such as densities (ρ), ultrasonic sound velocities (u) and viscosities (η) have been performed over the whole composition range at temperature ranging from 298.15 to 308.15 K and at atmospheric pressure. The ILs investigated in the present study included diethyl ammonium acetate ([Et 2NH][CH3COO], DEAA) and triethyl ammonium acetate ([Et3NH][CH3COO], TEAA). Further, to gain some insight into the nature of molecular interactions in these mixed solvents, we predicted the excess molar volume (VE), the deviation in isentropic compressibilities (ΔKs) and deviation in viscosity (Δη) as a function of the concentration of IL using the measured properties of ρ, u and η, respectively. Redlich-Kister polynomial was used to correlate the results. The intermolecular interactions and structural effects were analyzed on the basis of the measured and the derived properties. A qualitative analysis of the results is discussed in terms of the ion-dipole, ion-pair interactions, and hydrogen bonding between ILs and DMSO molecules and their structural factors.

Original languageEnglish
Pages (from-to)218-225
Number of pages8
JournalJournal of Molecular Liquids
Volume164
Issue number3
DOIs
Publication statusPublished - Dec 1 2011
Externally publishedYes

Fingerprint

Ionic Liquids
Molecular interactions
molecular interactions
Dimethyl Sulfoxide
Ammonium Compounds
Ionic liquids
Thermal effects
temperature effects
liquids
acetates
Viscosity
Ions
viscosity
deviation
Ultrasonic velocity
qualitative analysis
Acoustic wave velocity
acoustic velocity
Compressibility
Density (specific gravity)

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Temperature effect on the molecular interactions between two ammonium ionic liquids and dimethylsulfoxide. / Govinda, Varadhi; Attri, Pankaj; Venkatesu, P.; Venkateswarlu, P.

In: Journal of Molecular Liquids, Vol. 164, No. 3, 01.12.2011, p. 218-225.

Research output: Contribution to journalArticle

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