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A number of azomethines and vinylenes, containing 4,4′-biphenylylen and 2,2′-bithienyl-5,5′-diyl units as mesogenic groups has been synthesized and characterized by their elem ental analyses, IR and 1H NMR spectra and studied in relation to their liquid crystalline properties by DTA analysis and visually by their textures microscoping under polarized light. The described compounds are compared with analogous compounds of the benzene series.

zeitschrift für naturforschung b

Flüssig-kristalline Verbindungen aus der Thiophenreihe, Teil 3 Azomethine und Vinylene / Liquid Crystalline Compounds in the Thiophene Series, 3 Azomethines and Vinylenes