| abstract |
Compounds useful as lower viscosity liquid-crystalline components of which liquid-crystalline compositions are partly composed are provided, which compounds are liquid-crystalline compounds expressed by the general formula <IMAGE> (I) wherein <IMAGE> and R1 and R2 each represent an alkyl group of 1 to 8 carbon atoms, or liquid-crystalline compounds expressed by the general formula <IMAGE> (II) wherein R1 and R2 each represent an alkyl group of 1 to 8 carbon atoms. |