Ordering of some liquid crystals containing the 2-phenylindazole core

Molecules containing the 2-phenylindazole core present liquid crystalline p roperties even if the two terminal chains do not point along the same axis. C-13 NMR in the liquid crystalline phase shows that the molecular long axi s is nearly aligned with the para-axis of the phenyl moiety of the 2-phenyl indazole core. This implies that the first fragments of the chain belonging to the indazole moiety do not lie along the molecular long axis. To promot e liquid crystal properties, this chain needs to possess at least six carbo n atoms.