Acta Cryst. (2005). E61, o1066-o1067  [ doi:10.1107/S1600536805008068 ]

Dibenzimidazo[2,1-a:1',2'-b']anthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-6,11-dione: cis form (II)

J. Mizuguchi

Abstract: The title compound, C₃₆H₁₆N₄O₂, is the cis form of a benzimidazole perylene derivative used as a black pigment. The molecule is planar and stacked along the a axis. Because of an orientational disorder, a crystallographic center of symmetry appears at the site of the molecule, although the molecule does not have a center of symmetry.

Online 25 March 2005

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