LIQUID CRYSTAL ALKYL PERHYDROPHENANTHRENES

摘要

Perhydrophenanthrene derivatives of formula I I wherein R1 is alkyl of 1-10 C atoms and R2 is alkyl, alkoxy or alkanoyloxy each of 1-10 C atoms, H, Br, Cl or CN, have an extremely low optical anisotropy and are particularly suitable as components of liquid-crystalline dielectrics.