Synthesis and Crystal Structure of Novel Planar Chiral Diferrocenylimine-diols

A novel planar chiral diferrocenylimine-diols 6 was synthesized by the condensation of（R,S_p）-1-（2-diphenyl hydroxyl methyl） ferrocenylethylamine （R,S_p）-4 with phthaldehyde in anhydrous ethanol,and was crystallographically characterized.Single crystal X-ray diffraction analysis reveals that the molecular structure of compound 6 is enantiomerically pure and crystallizes in the noncentrosymmetric P2₁2₁2₁ space group,exhibiting "∩" shape,with the phenyl ring as a bridge linking two ferrocenes on both sides via CN,and the pair of ferrocenyl groups adopting E-configuration.The packing diagram showed that the n-pentane molecules are contained in the unit cell,indicating that the title compound has the ability of selectively extracting the n-pentane molecule from petroleum ether when crystallizing.