Modeling of tracer diffusion in liquids when solute–solvent interactions are present

Diffusion of Polymethylene Chain Molecules in Nonpolar Solvents

“…We find an average difference of <3% for 131 diffusion constants of n -alkane solutes in seven n -alkanes, − benzene, , toluene, tetralin, decalin, and CCl 4 . , Similar analyses give average differences of <2% between 26 experimental and calculated D values of 1-alkenes in five n -alkanes and <3% for 50 diffusion constants of 1-phenylalkanes in five n -alkanes, squalane (2,6,10,15,19,23-hexamethyltetracosane), isocetane (2,2,4,4,6,8,8-heptamethylnonane, HPMN), and pristane (2,6,10,14-tetramethylpentadecane). , The results for the n -alkanes and 1-alkenes in the n -alkanes are the first from a Kirkwood–Riseman analysis in a homologous series of solvents.…”

“…The solvents for the n -alkane, − 1-alkene, and 1-phenylalkane , solutes are given in Tables – , respectively, as are the temperatures at which they were studied. A temperature near (or equal to) 25 °C was used for all solutions; the solvents’ viscosities ,− at those temperatures are given in Tables – and will be used when discussing our results in the sections “Solvent Dependence of σ” and “Solvent-Dependent Size Parameters”.…”

“…The n -alkanes in toluene, CCl 4 , and benzene (Table ) and the 1-alkenes in the n -alkanes (Table ) were studied at additional temperatures; the viscosities at those temperatures ,− are not given but were used in our analyses. The diffusion constants in refs − were reported from two to four significant figures; the average differences between the experimental and calculated D values reported here are given to two significant figures with a third subscripted figure.…”

Low-parachor solvents extraction and thermostated micro-thin-layer chromatography separation for fast screening and classification of spirulina from pharmaceutical formulations and food samples

“…The parachor concept was invented by Sugden in 1924 [66]. This physicochemical factor still has a broad application for solving various structural problems and has also been used as a measure of intermolecular interactions or to investigate the mass transfer between organic fluids [67][68][69]. Based on this criterion and the results of principal components analysis, three relatively low-parachor extraction solvents; methanol, acetone and tetrahydrofuran were selected for the classification study of dry spirulina samples from pharmaceutical formulations and food samples.…”

Solvation model for estimating the properties of (vapour+liquid) equilibrium

“…More recently, the principles of LSER [2,3] have been applied to correlate the tracer diffusion coefficients, the solubility of compounds and the partition coefficients of organic solutes [20][21][22]. A comprehensive study on evaluating the predicted capability of LSER attributed to different kinds of equilibrium partition data of liquid systems has been carried out by Abraham and colleagues [23][24][25].…”