Abstract
In view of the wide scope of molecular interactions between the highly polar compound of N,N-dimethylformamide (DMF) and ammonium ionic liquids (ILs), we have measured thermophysical properties such as densities (ρ) and ultrasonic sound velocities (u) over the whole composition range at temperatures ranging from 25 to 50 °C under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, we predicted the excess molar volume (VE) and the deviations in isentropic compressibilities (ΔKs) 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 the hydroxide series of ammonium ILs of tetramethylammonium hydroxide [(CH 3)4N][OH] (TMAH), tetraethylammonium hydroxide [(C 2H5)4N][OH] (TEAH), and tetrapropylammonium hydroxide [(C2H7)4N][OH] (TPAH). 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 and ion-pair interactions, and hydrogen bonding between ILs and DMF molecules and their structural factors.
| Original language | English |
|---|---|
| Pages (from-to) | 13415-13425 |
| Number of pages | 11 |
| Journal | Journal of Physical Chemistry B |
| Volume | 114 |
| Issue number | 42 |
| DOIs | |
| Publication status | Published - Oct 28 2010 |
| Externally published | Yes |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Temperature effect on the molecular interactions between ammonium ionic liquids and N, N-dimethylformamide. / Attri, Pankaj; Venkatesu, Pannuru; Kumar, Anil.
In: Journal of Physical Chemistry B, Vol. 114, No. 42, 28.10.2010, p. 13415-13425.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Temperature effect on the molecular interactions between ammonium ionic liquids and N, N-dimethylformamide
AU - Attri, Pankaj
AU - Venkatesu, Pannuru
AU - Kumar, Anil
PY - 2010/10/28
Y1 - 2010/10/28
N2 - In view of the wide scope of molecular interactions between the highly polar compound of N,N-dimethylformamide (DMF) and ammonium ionic liquids (ILs), we have measured thermophysical properties such as densities (ρ) and ultrasonic sound velocities (u) over the whole composition range at temperatures ranging from 25 to 50 °C under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, we predicted the excess molar volume (VE) and the deviations in isentropic compressibilities (ΔKs) 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 the hydroxide series of ammonium ILs of tetramethylammonium hydroxide [(CH 3)4N][OH] (TMAH), tetraethylammonium hydroxide [(C 2H5)4N][OH] (TEAH), and tetrapropylammonium hydroxide [(C2H7)4N][OH] (TPAH). 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 and ion-pair interactions, and hydrogen bonding between ILs and DMF molecules and their structural factors.
AB - In view of the wide scope of molecular interactions between the highly polar compound of N,N-dimethylformamide (DMF) and ammonium ionic liquids (ILs), we have measured thermophysical properties such as densities (ρ) and ultrasonic sound velocities (u) over the whole composition range at temperatures ranging from 25 to 50 °C under atmospheric pressure. To gain some insight into the several aggregations of molecular interactions present in these mixed solvents, we predicted the excess molar volume (VE) and the deviations in isentropic compressibilities (ΔKs) 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 the hydroxide series of ammonium ILs of tetramethylammonium hydroxide [(CH 3)4N][OH] (TMAH), tetraethylammonium hydroxide [(C 2H5)4N][OH] (TEAH), and tetrapropylammonium hydroxide [(C2H7)4N][OH] (TPAH). 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 and ion-pair interactions, and hydrogen bonding between ILs and DMF molecules and their structural factors.
UR - http://www.scopus.com/inward/record.url?scp=77958481145&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77958481145&partnerID=8YFLogxK
U2 - 10.1021/jp108003x
DO - 10.1021/jp108003x
M3 - Article
C2 - 20925365
AN - SCOPUS:77958481145
VL - 114
SP - 13415
EP - 13425
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 42
ER -