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Measurements and Molecular Interactions for N,N-dimethylformamide With Ionic Liquid Mixed Solvents

Measurements and Molecular Interactions for N,N-dimethylformamide With Ionic Liquid Mixed Solvents

Pankaj Attri, P Madhusudan Reddy, P Venkatesu, Anil Kumar, T Hofman

J Phys Chem B. 2010 May 13;114(18):6126-33.

PMID: 20405882

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 (rho) and ultrasonic sound velocities (u) over the whole composition range at 25 degrees C under atmospheric pressure. The excess molar volume (V(E)) and the deviation in isentropic compressibilities (DeltaK(s)) 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 ([Et(2)NH][CH(3)COO], DEAA), triethylammonium actetate ([Et(3)NH][CH(3)COO], TEAA), triethylammonium dihydrogen phosphate ([Et(3)NH][H(2)PO(4)], TEAP), and triethylammonium sulfate ([Et(3)NH][HSO(4)], 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP36443808	1-Benzyl-3-methylimidazolium chloride		36443-80-8	Price

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