| 摘要 |
<p>To provide a liquid crystal compound having a large negative dielectric anisotropy (”µ), and having at least one of characteristics such as a high stability to heat, light and so forth, a high clearing point, a suitable refractive index anisotropy (”n) and an excellent compatibility with other liquid crystal compounds, and an intermediate thereof. A solution is a compound represented by formula (1):
wherein, for example, R 1 and R 2 are alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons; ring A 1 , ring A 2 and ring A 3 are 1,4-cyclohexylene or 1,4-phenylene; Z 1 , Z 2 and Z 3 are a single bond or -(CH 2 ) 2 -; X is -CF 2 - or -CHF-; and l, m and n are 0 or 1.</p> |
