Novel chiral smectic ester compounds suitable for a display mode utilizing ferroelectric liquid crystals, and liquid crystal compositions containing the same are provided, which compounds are expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 18 carbon atoms; X represents either one of a single bond, --O-- ##STR2## A represents ##STR3## and m and n each is 1 or 2.
提供了适用于利用
铁电液晶显示模式的新手性液晶酯化合物和含有它们的液晶组合物,这些化合物由以下公式表示:其中R代表1到18个碳原子的烷基;R*代表4到18个碳原子的光学活性烷基;X代表单键之一,--O--,或 ##STR2## A代表 ##STR3##,m和n各为1或2。