The title compound, C28H26N4O7, (I) crystallizes with two molecules in the asymmetric unit. It is a glycoluril derivative with five fused rings. A phenylethynyl-substituted benzene ring is fused to a seven-membered ring, which binds two of the N atoms from separate rings of the glycoluril system. The other two N atoms are each linked to an O atom by methylene groups, forming a six-membered ring. The crystal structure is stabilized by intermolecular Ca??H- - -O hydrogen bonds.
|Pages (from-to)||o4872 - o4873|
|Number of pages||2|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|Publication status||Published - 2006|