Diethyl 2,6-bis(4-ethynylphenyl)-4,8-dioxoperhydro-2,3a,4a,6,7a,8a-hexaaza-cyclopenta[def]fluorene-8b,8c-dicarboxylate

Abstract

The mol­ecule of the title compound, C30H28N6O6, a glycoluril derivative, lies on a twofold rotation axis with two ethyl acetate groups bonded to the convex face of the glycoluril system. The dihedral angle between the imidazolone rings is 73.12 (3)°. Two symmetry-equivalent six-membered triazine rings are fused to the glycouril unit to form rigid side walls of a mol­ecular clip. The crystal structure is stabilized by weak inter­molecular C—H⋯O hydrogen bonds. The ethyl ester group is disordered over two sites of occupancy 0.539 (7) and 0.461 (7).