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, αE; for many systems the variation of αE 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.
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