3α,6α-Bis(ethoxycarbonyl)glycoluril (diethyl 2,5-dioxoperhydroimidazo[4,5-d]imidazole-3a,6a-dicarboxylate)

Abstract

Key indicators: single-crystal X-ray study; T = 292 K; mean (C-C) = 0.005 Å; disorder in main residue; R factor = 0.068; wR factor = 0.197; data-to-parameter ratio = 11.7.The title compound, C 10 H 14 N 4 O 6 , crystallizes with two independent molecules in the asymmetric unit. An extensive network of N-HÁ Á ÁO and C-HÁ Á ÁO intermolecular hydrogen bonds stabilizes the crystal packing. One ethyl group is disordered over two positions; the site occupancy factors are 0.68 and 0.32. Related literature