13,13′-Bi(dibenzo[a,i]fluorenylidene)

Abstract

The asymmetric unit of the title compound, C42H24, contains two almost identical molecules. The molecules have approximate D2 symmetry. They show a largely twisted double bond, the molecular halves enclosing dihedral angles of 62.86 (4) and 61.22 (3)°. The crystal studied was twinned by non-merohedry.

Keywords

• crystal structure
• strain
• twisted alkene
• polycyclic aromatic
• fulvene
• twin