In order to investigate the influence of the less studied central linkage l
ike amide and alpha - methylazine on mesomorphism, two homologous series ha
ving following structure have been synthesized.
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The study has shown that amido central linkage endows the system with high
smectogenic tendencies. The alpha - methyl linkage of schiff bases retards
the commencement of smectic phase up to n-decyloxy derivative.