PBb19 シクロブタジエンコバルト誘導体の合成とそれらの液晶性

抄録

Cyclobutadienecobalt derivatives having long alkoxy lateral groups were prepared by the reaction of acetylenes with (η^5-cyclopentadienyl) bis (triphenylphosphine) cobalt. The mesogenic properties of the cyclobutadienecobalt derivatives were examined by the optical measurement using the crossed polarizers, differential scanning calorimetry (DSC) and X-ray diffraction experiments. Cyclobutadienecobalt derivatives showed the thermotropic liquid crystalline phase. The phase transition behavior of cyclobutadienecobalt derivatives was found to be dependent upon the character of the mesogen and of the long alkoxy lateral groups.