Ferroelectric liquid crystal compositions containing halogenated cores and chiral halogenated cores and chiral haloalkoxy tail units

Abstract

The subject application discloses chiral nonracemic compositions of the general formula: ##STR1## wherein R.sub.1 is an achiral tail of two to sixteen carbons; Ar is an achiral FLC core of at least two rings; * denotes a chiral or potentially chiral carbon; Q is H or a methyl group; X and Z are halides and Y is H or a halide; and R.sub.2 is one to ten carbon atoms. The --O--C*HQ--C*HX--C*HY-- segment comprises the chiral proximal segment of the chiral tail. Z can be an ortho halide alone, or ortho and meta halides on adjacent carbons on the aromatic ring of the core adjacent to the proximal segment. R.sub.2 is the distal segment of the chiral tail. The proximal segment is selected from the diastereomers and enantiomers: ______________________________________ 2S-halo 2R-halo 1S-methyl-2S-halo 1R-methyl-2R-halo 1S-methyl-2R-halo 1R-methyl-2S-halo 2S,3S-dihalo 2R,3R-dihalo 2R,3S-dihalo 2S,3R-dihalo 1R-methyl-2R,3R-dihalo 1S-methyl-2S,3S-dihalo 1R-methyl-2R,3S-dihalo 1S-methyl-2S,3R-dihalo 1R-methyl-2R,3S-dihalo 1S-methyl-2S,3R-dihalo 1R-methyl-2R,3S-dihalo 1S-methyl-2S,3R-dihalo ______________________________________

Dependencies are inferred from the claim text.