Solid-Liquid Phase Equilibria in Binary Mixtures of Silicon Tetrachloride, Silicon Tetrabromide, and Tin Tetrachloride with Benzene, p-Xylen, and p-Dioxane.

Abstract

Solid-liquid phase diagrams have been obtained from time-temperature cooling curves for the binary systems of SiCU with benzene and p-xylene, and for SiBr4 with p-dioxane. Unlike CCU, SiCU does not form solid compounds with either benzene or p-xylene, but rather forms liquid solutions that are nearly ideal over the whole range of composition. The SiBr4-dioxane system also shows no compound. The 1:4 compound described in the earlier literature was not verified. Correlations between the capacity to form intermolecular compounds and the ability of the tetrahalides of C, Si, and Sn to act as electron acceptors are discussed.PREVIOUS WORK has shown that CC14 forms solid compounds with benzene and a number of its derivatives (1,2, 5, 6, 9, 10, 12). Other work (8, 11) has shown that CC14 also forms solid compounds with p-dioxane.