Liquid crystalline ethane derivatives prepared by the described method in order to form liquid crystalline compositions with known liquid crystalline compounds have a general formula 1 :
wherein, when ring A indicates a 1,4-substituted benzene ring, then ring B indicates 1,4-substituted benzene ring or 1,4- trans substituted cyclohexane ring or 1,4-substituted bicyclo [2,2,2] octane ring or 2,5-substituted pyrimidine ring or 2,5- substituted 1,3-dioxane ring, or when ring B indicates a 1,4- substituted benzene ring, then A indicates 1,4-trans substituted cyclohexane ring or 1,4-substituted bicylo [2,2,2] octane ring or 2,5-substituted pyrimidine ring or 2,5-substituted 1,3-dioxane ring, and R indicates a normal alkyl chain C n H 2n-1 or a non-branched alkoxyl group C n H 2n+1 O or an alkylcarboxylic group C n H 2n+1 COO or an alkylcarbobato group C n H 2n+1 OCOO or a branched alkyl chain CH 3 -CH 2 -CH/CH 3 /-/ CH 2 / k ora vbranched alkoxy group CH 3 -CH 2 -CH/CH 3 /-/CH 2 / k -O, n is an integer number and assumes values from 1 to 12, k is an integer number and assumes a values from 1 to 3, and 1 and m assume values 1 or 0.
Liquid crystalline compositions containing the compound of formula 1 are characterized by low viscosity and are applied displays.