N,N'-Bis(9H-fluoren-9-yl­idene)benzene-1,2-diamine

The title compound, C₃₂H₂₀N₂, was synthesized by the p-toluene­sulfonic acid-assisted Schiff base reaction between 9-fluorenone and o-phenyl­enediamine. The mol­ecule crystallizes in a centrosymmetric space group and is located on a twofold rotation axis. The two fluoren-9-yl­idene moieties adopt a trans configuration as substituents on the linking benzene ring, making the entire mol­ecule chiral.