Author:
Pintos Mercedes,Bravo Ramon,Baluja Maria Carmen,Andrade Maria Inmaculada Paz,Roux-Desgranges Geneviève,Grolier Jean-Pierre E.
Abstract
Excess molar volumes, VE, and excess molar heat capacities at constant pressure, [Formula: see text], have been obtained for some n-alkanoate + n-alkane mixtures at 298.15 K from density and volumetric heat capacity measurements using liquid-flow techniques. The alkanoates selected were n-propyl methanoate, methyl ethanoate, ethyl ethanoate, methyl propanoate, methyl butanoate, methyl pentanoate, and methyl octanoate. VE are positive for all systems and rather symmetric. The composition dependence of [Formula: see text] is typically of the ω-shaped type with two minima, more or less pronounced, which are separated by a positive part in the case of the more polar esters, i.e. n-propyl methanoate and methyl ethanoate. These results are discussed in terms of possible changes in conformation of both the ester and the n-alkane.
Publisher
Canadian Science Publishing
Subject
Organic Chemistry,General Chemistry,Catalysis
Cited by
87 articles.
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