Liquid crystal compounds

Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...

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560 65, 560 81, 560 83, 560102, 25229964, 25229966, 25229967, C09K 1912, C07C 6976

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052620867

ABSTRACT:
(R)- and (S)-enantiomer composition represented by the formula (I) having sufficient high optical purity for exhibiting optically tristable states in S*(3) phase; ##STR1## wherein Ra means a C.sub.5 -C.sub.14 alkyl group or a C.sub.5 -C.sub.14 alkoxy group, preferably a C.sub.5 -C.sub.14 alkyl group, Rb means a C.sub.4 -C.sub.12 normal alkyl group or a C.sub.4 -C.sub.12 branched alkyl group, X means a ##STR2## group or a ##STR3## group, Z means a fluorine containing alkyl group, preferably a trifluoromethyl group and * shows an optically active carbon.

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