Molecular crystals and liquid crystals · 1979 · 40 citations · 6 references
Natural SciencesChemistryMaterials ScienceCrystal StructureOrganic ChemistryPhysical ChemistryCrystal SystemsCrystallographyHeterocyclic ChemistryMolecular SymmetryPhase ChangeSubstituent EffectsChiral Nematic PhaseX-ray Diffraction Analysis
Abstract The polymorphism of the 4 cyanobiphenyl-4′-n-alkoxy benzoate esters is investigated and a reentrant nematic phase is observed for the n = 8 and n = 9 homologues. X-Ray studies confirm this fact and show that in the reentrant phase the cybotactic groups are SA-like at high temperature near the SA phase while they appear SC-like at lower temperatures.
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The structure of smectic A phases of compounds with cyano end groups
A. J. Leadbetter, J. C. Frost, J. P. GAUGHAN et al. · Journal de physique · 1979 · 309 citations · Full text