Acta Cryst. (2005). E61, o2632-o2634 [ doi:10.1107/S1600536805022725 ]
Abstract: In the title compound (systematic name: diethyl 4,8-dioxo-2,6-di-p-tolyl-1,3,5,7-tetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[def]fluorene-8b,8c-dicarboxylate), C28H32N6O6, the dihedral angles between the two fused five-membered rings in the glycoluril unit and between the two terminal benzene rings are 71.8 (2) and 88.5 (1)°, respectively.
Online 20 July 2005
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