abstract |
The invention relates to compounds of formula (I), wherein one or more of the groups A1-5 represent 1,4-naphthylene or 1,4- or 9,10-anthracenylene, and other parameters as claimed in the claims 1 defined. The invention furthermore comprises liquid-crystalline media comprising the subject compounds, components for high-frequency technology comprising these media, in particular phase shifters and microwave array antennas. |