An optically active liquid crystal compound useful as a component of ferroelectric liquid crystal compositions and exhibiting ferroelectric properties within a broad temperature region including room temperature and a liquid crystal composition containing the compound are provided, which compound is an optically active phenylpyrimidine compound expressed by the formula ##STR1## wherein R.sup.1 is a 1-18C alkyl group, n is an integer of 2-15 and C having * attached thereonto indicates an asymmetric carbon atom.
提供了一种光学活性液晶化合物,可用作
铁电液晶组分,并在包括室温在内的广泛温度范围内表现出
铁电性质,以及含有该化合物的液晶组合物。该化合物是一种光学活性
苯基嘧啶化合物,其表示为公式##STR1## 其中,R1是1-18C烷基,n是2-15的整数,带有*的C表示一个不对称的碳原子。