Diethyl 7,12-dihydro-8-iodo-6,13-dioxo-cis-7H,11H-2,4-dioxa-5a,6a,12a,13a-tetraazabenz[f]cycloocta[cd]azulene-13b,13c-dicarboxylate

Abstract

The title compound, C21H23IN4O8, is a glycoluril derivative with five fused rings. An iodobenzene ring is fused to a seven-membered ring which binds two of the N atoms from separate rings of the glycoluril system. The other N atoms are linked via methylene groups to form an eight-membered ring with two ether O atoms separated by an additional methylene group. The crystal structure is stabilized by inversion-related C—H...π interactions together with C—H...O non-classical hydrogen bonds.