Halovinyl ethers of the general formula I ##STR1## in which R, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2, X.sup.1, X.sup.2, l, m and n are as defined herein are suitable as components of liquid-crystalline media.
通式I的卤代
乙烯醚,其中R、A.sup.1、A.sup.2、A.sup.3、Z.sup.1、Z.sup.2、X.sup.1、X.sup.2、l、m和n如本文所定义,适用作为液晶介质的组分。