Aromatic isothiocyanates

A compound of formula G

• in which
• RG denotes H, fluorinated or non-fluorinated straight chain having 1 to 12 C atoms, or fluorinated or non-fluorinated straight chain or branched alkenyl having 3 to 12 C atoms, in which one or more CH2— groups may be replaced by
• and in which one or more non-adjacent CH2— groups may be replaced by —O—,
• ZG1 and ZG2, identically or differently, denote —CH═CH—, —CF═CF—, —CH═CF—, —CF═CH—, —C═C—, —C═C═C═C— or a single bond,
• X denotes Cl or F,
• R denotes linear or branched or cyclic alkyl having 3 to 6 C atoms,
• t is 0, 1 or 2, and
• identically or differently, denote a radical selected from the following groups:
• a) the group consisting of 1,4-phenylene, 1,4-naphthylene, and 2,6-naphthylene, in which one or two CH groups may be replaced by N and in which one or more H atoms may be replaced by L,
• b) the group consisting of trans-1,4-cyclohexylene, 1,4-cyclohexenylene, tetralin-2,6-diyl, tetralin-5,8-diyl, decalin-2,6-diyl, bicyclo [1.1.1] pentane -1,3-diyl, 4,4′-bicyclohexylene, bicyclo [2.2.2] octane-1,4-diyl, and spiro [3.3] -heptane-2,6-diyl, in which one or two CH groups may be replaced by N, one or more non-adjacent CH2 groups may be replaced by —O— and/or —S— and in which one or more H atoms may be replaced by L,
• c) the group consisting of thiophene-2,5-diyl, thieno [3,2-b] thiophene-2,5-diyl, selenophene-2,5-diyl, each of which may also be mono- or polysubstituted by L,
• L on each occurrence, identically or differently, denotes F, CI, CN, SCN, SF5 or straight-chain or branched, in each case optionally fluorinated, alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy each having 1 to 12 C atoms.