Novel mesomorphic substances, constituting, in certain temperature ranges, nematic or smectic liquid crystals which are compounds of the formula: ##STR1## wherein R.sub.1 is an alkoxy group containing 1 to 10 atoms of carbon; R.sub.2 is an alkyl group containing 1 to 10 atoms of carbon; X is Br or CN.
小说远程物质,在某些温度范围内,构成向列相或液晶相的液晶化合物,其
化学式为:##STR1##其中R.sub.1是含有1-10个碳原子的烷氧基;R.sub.2是含有1-10个碳原子的烷基;X是Br或CN。