Attri, Pankaj ; Reddy, P. Madhusudan ; Venkatesu, P. ; Anil Kumar, ; Hofman, T. (2010) Measurements and molecular interactions for N,N-dimethylformamide with ionic liquid mixed solvents Journal of Physical Chemistry B, 114 (18). pp. 6126-6133. ISSN 1089-5647
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp101209j?prev...
Related URL: http://dx.doi.org/10.1021/jp101209j
Abstract
To understand the molecular interactions between N,N-dimethylformamide (DMF) with two families of ionic liquids (ILs), we have measured thermophysical properties such as densities (ρ) and ultrasonic sound velocities (u) over the whole composition range at 25°C under atmospheric pressure. The excess molar volume (VE) and the deviation in isentropic compressibilities (ΔKs) were predicted using these properties as a function of the concentration of IL. These results are fitted to the Redlich-Kister polynomials. The materials investigated in the present study included two families of ILs such as ammonium salts and imidazolium salts. Diethylammonium acetate ([Et2NH][CH3COO], DEAA), triethylammonium actetate ([Et3NH][CH3COO], TEAA), triethylammonium dihydogen phosphate ([Et3NH][H2PO4], TEAP), and triethylammonium sulfate ([Et3NH][HSO4], TEAS) are ammonium salts and 1-benzyl-3-methylimidazolium chloride ([Bmim][Cl]) belongs to the imidazolium family. 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 DMF molecules and their structural factors.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 1573 |
Deposited On: | 05 Oct 2010 12:16 |
Last Modified: | 17 May 2011 09:02 |
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