Mesomorphic Oxadiazoles with Terminal Cl-Substituent

New liquid crystalline oxadiazoles containing terminal Cl-group and phenylcyclohexane fragment together with their biphenyl analogues have been synthesized and investigated by DSC and polarizing microscopy. There is a direct dependence of results obtained on the central heterocyclic structure and the character and position of the substituent related to the asymmetrical heterocyclic unit.