Molecular species in liquid carboxylic acids

✍ Scribed by Michael Bobik; Friedrich Kohler; Gustav Heger; Hans Lischka; Peter Schuster

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 539 KB
• Volume: 40
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(76)80122-4

✦ Synopsis

hfeasurerncnts of dielectric pcrmittivity and electric conductance are presented for mixtures of carbosylic acidsformic, trifluoroacetic, acetic and propionic -and non-polar liquids, For the dielectric and associative behavior of carbosylic acids a knowledge of the cis-rrms conformational equilibria of the monomeric acid molecules seems to be essential. Therefore the cis and rrans conformations of these molecules have been calculated by rhc CND0/2 and KILO methods. Appreciable rotational b%rizrs for their interconversion have been obtained-Measureme& of the (relative) dielectric permittiviv E' and the electric conductance o [ 11 were performed and compared with literature data on formic acid, trifluoroacetic acid, acetic acid, and propiorric acid in mixtures with non-polar iiquids. There is a surprising agreement of the concentration * ?resent address: Institut fi.ir Thermo-und Fluid-dynamik, Ruhr IJniversitIt Rochum, BRD.