| abstract |
The invention relates to a silacyclohexane compound of the following formula (I) or (II) which is useful as a liquid crystaln n n wherein R is an organic residue, none ofn n which may be the same or different, is a trans-1-sila-1,4-cyclohexylene or trans-4-sila-1,4-cyclohexylene group which is substituted on the silicon atom by H, F, Cl or CH 3 , and the other is a trans-1,4-cyclohexylene group, or a trans-1-sila-1,4-cyclohexylene or trans-4-sila-1,4-cyclohexylene group as defined above, n is 0 or 1, L 1 is H or F, L 2 is H, F or Cl, and Z is CN, F, Cl or an organic residue. n Processes for producing the compounds (I) and (II) are described, along with liquid crystal compositions comprising the compounds and liquid crystal devices comprising the compositions. |