Partial molar volumes of linear hydrocarbons in methanol in the very dilute region. Intermolecular interactions. H-bond effects

Autor:	Barbosa, Ester F. G., Sousa, Susana M. C., Santos, M. Soledade C. S., Lampreia, Isabel M. S.
Zdroj:	Physical Chemistry Chemical Physics (PCCP); February 21, 2001, Vol. 3 Issue: 4 p556-561, 6p
Abstrakt:	Limiting partial molar volumes VB∞ for the linear hydrocarbons, C5, C6, C7, C8 and C10 in methanol were determined with a vibrating tube densimeter at 24.994°C (ITS-90). VB∞ and bV were discussed in terms of solute–solvent and solute–solute molecular interactions, focusing on H-bond cleavage, hydrocarbon short-range correlations of molecular orbitals and conformational effects. VB∞ (HS)/VB (HS) values calculated according to Lee's hard-sphere mixtures model are compared with experimental values. A discussion is presented and deviations are interpreted in terms of size, shape, packing densities and H-bond effects.
Databáze:	Supplemental Index
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