Crystal Structure of 2-methylbutyl 4'-octyloxybiphenyl-4-carboxylate

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  • MATSUNAGA Yasuko
    Graduate School of Humanities and Sciences, Ochanomizu University
  • HORI Kayako
    Graduate School of Humanities and Sciences, Ochanomizu University

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  • PBb02 液晶性物質、2-methylbutyl 4'-octyloxybiphenyl-4-carboxylateの結晶構造

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The title compound, 2-methylbutyl 4'-octyloxybiphenyl-4-carboxylate, exhibits the monotropic chiral smectic C phase in addition to the smectic A phase. On the other hand, the isomer with the reversed direction of the ester linkage exhibits the crystal G phase. In order to investigate the influence of the direction of ester linkages on liquid crystal phases, crystal structure has been determined for the title compound. The molecule has a bent structure. The packing mode of molecules has a smectic-like layer structure, stacked in a zig-zag way. The molecules in a layer have an antiparallel arrangement every two molecules. The long axis of a molecule is tilted from the layer normal (20°).



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