Discotic Liquid Crystals of Transition Metal Complexes 11: The First ?-Acceptor in Discotic Columnar Liquid Crystals Obtained from Octasubstituted Bis(diphenylethane-1,2-dithiolene)nickel Complexes
Disk-like complexes, bisnickel (n-alkyl = n-hexyl, n-octyl) and bisnickel have been synthesized and characterized.It was found that n-decyloxy derivative exhibits a hexagonal discordered columnar (Dhd) mesophase while n-alkyl derivatives are not discotic liquid crystals but isotropic liquids at room temperature.The half-wave potentials for reduction of these complexes is -0.04 - -0.06 V. n-Decyloxy derivative is the first ?-acceptor in discotic columnar liquid crystals.