Magneto-optical rotation studies of liquid mixtures. Part 6.—Specific interactions in mixtures of CCl4 with aliphatic and aromatic ketones and esters

Abstract

Measurements have been made of the magneto-optical rotations at 435.8 nm of binary mixtures of CCl₄ with 35 aliphatic and aromatic ketones and esters. The departure from ideality of each binary mixture was treated in terms of an excess magnetic rotation, α^E; for many systems, particularly the aromatic compounds, the variation of α^E with composition gave indications of interaction between the CCl₄ and the other component. The results for the longer-chain aliphatic compounds indicated that their liquids contain orientational order which was broken up by addition of the CCl₄. The molar magnetic rotations, Λ_m, were calculated from the results and compared with the values calculated from a set of partial magnetic rotation parameters obtained previously. In most cases the agreement was quite good thus confirming the approximate additivity of the Faraday effect.