| abstract |
Subject n n The subject is to provide a liquid crystal compound not only having a large negative dielectric anisotropy (Δε) and a high maximum temperature of a nematic phase (T NI ), but also having at least one of characteristics such as stability to heat, light or the like, a suitable refractive index anisotropy (Δn) and an excellent compatibility with other liquid crystal compounds. n n Means for Solving the Subject n n The invention provides a compound represented by the formula (1).n nIn the formula (1), for example, R 1 and R 2 are alkyl having 1 to 10 carbons, alkoxy having 1 to 9 carbons or alkenyl having 2 to 10 carbons; the ring A and the ring B are 1,4-cyclohexylene or 1,4-phenylene; Z 1 and Z 2 are a single bond and Z 3 is -CH 2 O- or -OCH 2 -; Y 1 and Y 2 are halogen, -CF 3 , -CHF 2 , -CH 2 F, -OCF 3 , -OCHF 2 or -OCH 2 F; and m and n is 0, 1 or 2, p is 1 or 2, and the sum of m, n and p is 1, 2 or 3. |