| abstract |
[PROBLEMS] To provide a novel liquid crystal compound having large Δε and low viscosity, a liquid crystal composition containing the same, and a liquid crystal display device. An oxyfluoride derivative of the general formula 1 is provided. n, m is 0 or 1; A 1 ~A 3 is 1,4-phenylene (or F, Cl, Br substitutions), 1,4-cyclohexylene, 1,4-cyclohexenylene, etc.,; A 4 is 1, 4-phenylene (or F, Cl, Br substitution); Z 1 To Z 3 are — (CH 2 ) 2 —, —CH ＝ CH—, —C≡C -, - COO -, - OCO -, - CH 2 O -, - OCH 2 -, - CF 2 O -, - OCF 2 -, - (CF 2) 2 -, - C F = CF-, etc.,; R 1 is an alkyl of C1-12, -C H 2- may be substituted by -O-, -CO-, -COO-, -OCO-, or the like, but -O- is not adjacent to each other. |