The study of intermolecular interactions in [Bmim][PF6] + 1-octyl-2-pyrrolidone binary mixtures from volumetric, acoustic, optical and spectroscopic measurements

•The studied binary systems is {[Bmim][PF6] + 1-octylpyrrolidone}.•Density, speed of sound and refractive index are measured at various temperatures.•The interactions in the system are analyzed in terms of excess parameters.•The existing interactions are well explained with the help of IR spectral s...

Full description

Saved in:

Bibliographic Details
Published in:	The Journal of chemical thermodynamics Vol. 179; p. 106952
Main Authors:	Prathipati, Sowjanya, Srinivasa Rao, V, Reddy Munnangi, Srinivasa, Gopisetti, R. Satyanarayana, Mujahid Alam, Mohammed, Babu Bollikolla, Hari
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-04-2023
Subjects:	1-octyl-2-pyrrolidone [Bmim][PF6] Density Excess thermodynamic parameters Refractive index Speed of sound Excess thermodynamic parameters 1-octyl-2-pyrrolidone Speed of sound Density Refractive index [Bmim][PF6]
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	•The studied binary systems is {[Bmim][PF6] + 1-octylpyrrolidone}.•Density, speed of sound and refractive index are measured at various temperatures.•The interactions in the system are analyzed in terms of excess parameters.•The existing interactions are well explained with the help of IR spectral studies.•Observed experimental results are correlated with PFP theory. Under 101.3 kPa pressure, the densities, speeds of sound, and refractive indices of [Bmim][PF6] + 1-octyl-2-pyrrolidone mixtures were determined experimentally over the whole composition range and at 303.15 to 323.15 K. The excess molar volumes (VmE), excess values of partial molar volumes (V¯mE), partial molar volumes at infinite dilution (V¯mE,∞), excess values of isentropic compressibility (KsE), speeds of sound (uE) and isobaric thermal expansion coefficient (αPE) have been calculated using these experimental data. The Redlich–Kister polynomial equation has been adequately fitted to the computed data. Intermolecular interactions between like and unlike molecules have been interpreted using the experimental and computed data. The Prigogine–Flory–Patterson theory of excess molar volume and IR spectroscopic studies supported the conclusions drawn from volumetric and acoustic properties.
ISSN:	0021-9614 1096-3626
DOI:	10.1016/j.jct.2022.106952