THE CUBIC MESOPHASE OF ANALOGOUS CHIRAL AND ACHIRAL HYDRAZINE DERIVATIVES

The structures of the cubic mesophases of a chiral and an achiral hydr azine derivative have been investigated by means of X-ray diffraction experiments. As seen from the phase diagram of the binary system, both cubic phases are incompletely miscible which can be explained by the different space groups of the cubic lattices. In contrast to the isotr opic liquid, the cubic phase of the chiral compound exhibits a conside rable optical rotation indicating phase chirality.