Abstract
4-Chloro-1,3-phenylene bis[4-(4-n-alkylphenyliminomethyl)benzoates] have been synthesized and the mesophases were investigated by optical microscopy, X-ray diffraction measurements and electrooptical methods. Some derivatives exhibit the electrooptically switchable mesophase B2 between 75–125°C, which can be supercooled additionally by about 20 K. This existence range is very useful for further physical measurements.