| abstract |
A liquid-crystalline mixture containing at least one compound of the formula <IMAGE> in which Y is nitrogen and Z is CH or Z is nitrogen and Y is CH; n is the number 0 or 2; the rings A and B are 1,4-phenylene or trans-1,4-cyclohexylene; R<1> is p-alkylphenyl, trans-4-alkylcyclohexyl or, if n is the number 2 or both rings A and B are 1,4-phenylene, is alternatively alkyl; and R<2> and the alkyl radicals in R<1> are straight-chain C1-C10-alkyl, and at least one 1-cyclohexyl-2-phenylethyl derivative and/or at least one phenyl cyclohexanecarboxylate or phenyl benzoate, and novel compounds coming under the formula I, the preparation thereof, and the use for electro-optical purposes. |