Molecular alloys in the series of para-disubstituted benzene derivatives.: Part 6. The para-dichlorobenzene-para-chloroiodobenzene system

Abstract The binary system between para -dichlorobenzene and para -chloroiodobenzene is presented. The phase diagram shows a peritectic phenomenon at high temperature for concentrations very close to pure para -dichlorobenzene due to the α-β polymorphism of this compound. The main characteristic of this diagram is a syncrystallisation domain in all proportions for the α-phases with a Gibbs' minimum. Crystalline parameters of all the molecular alloys are given.