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A homologous series of heterocycles,6-methyl-2-(4-alkoxybenzylidenamino)benzothiazoles,were synthesized and characterized using FT-IR,~1H and ~(13)C NMR and mass spectrometric analysis.Enantiotropic nematic phase was observed for shorter members.Smectic A phase only emerged from octyloxy derivative onwards.The terminal methyl group at the benzothiazole fragment and the Schiff base linkage influenced the mesomorphic behavior of the present series.
A homologous series of heterocycles, 6-methyl-2- (4-alkoxybenzylidenamino) benzothiazoles, were synthesized and characterized using FT-IR, ~ 1H and ~ 13 C NMR and mass spectrometric analysis. Enantiotropic nematic phase was observed for short members . Smectic A phase only explicitly from octyloxy derivative onwards. The terminal methyl group at the benzothiazole fragment and the Schiff base linkage influenced the mesomorphic behavior of the present series.