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Abstract
Several triplet liquid crystals based on isolithocholic acid as central unit and cyanobiphenyl units as terminal mesogens have been prepared. The lengths of both spacers have been varied. The chiral nematic — isotropic transition temperatures and selective reflection wavelengths of the chiral nematic phases of the pure compounds and as guests in a liquid crystalline host show only weak odd — even effects as a function of the parity of the spacers. This is due to the fact that the bonds connecting the steroid nucleus with the spacers are not parallel with the long axis of the steroid, therefore changing the parity of the spacer does not result in a significant change in the ordering of the phases.
