Magneto-optical rotation studies of liquid mixtures. Part 3.—Specific interactions in mixtures of CCl4 with aliphatic, alicyclic and aromatic hydrocarbons and amines

Abstract

Measurements have been made of the magneto-optical rotations at 435.8 nm of binary liquid mixtures of CCl₄ with the following compounds: n-pentane, n-hexane, n-heptane, methylcyclo-hexane, cyclo-octene, 2-methyl-2-butene, 1,5-cyclo-octadiene, decahydronaphthalene (decalin), ethyl benzene, isopropylbenzene (cumene), s-butylbenzene, t-butylbenzene, mesitylene, nitrobenzene, chlorobenzene, anisole, indane, indene, tetrahydronaphthalene, 1-methylnaphthalene, n-butylamine, s-butylamine, t-butylamine, diethylamine, triethylamine, aniline, N-methylaniline, N,N-dimethyl-aniline, N,N-diethylaniline, benzylamine, o-toluidine, m-toluidine, o-chloroaniline, m-chloroaniline, piperidine and pyrrolidine. The departure from ideality of each binary system was treated in terms of an excess magnetic rotation, α^E; for many systems the variation of α^E with composition gave indications of specific interaction between the CCl₄ and the other component. This was particularly the case for the aromatic compounds for which it is thought that the interaction involves charge-transfer from the π-electron system of the aromatic molecule to a vacant d-orbital of a chlorine atom in a CCl₄ molecule.