Research Article: Imidazo[1,2-b]isoquinoline-5,10-dione

Date Published: July 01, 2011

Publisher: International Union of Crystallography

Author(s): Nassir N. Al-Mohammed, Yatimah Alias, Zanariah Abdullah, Hamid Khaledi.


The title butterfly-shaped mol­ecule, C11H6N2O2, is folded slightly along the O=C⋯C=O line, the dihedral angle between the two parts being 6.42 (3)°. In the crystal, adjacent mol­ecules are linked through C—H⋯O hydrogen bonds into infinite layers parallel to the ac plane. The layers are further connected into a three-dimensional netweork via π–π inter­actions formed between pairs of anti­parallel arranged mol­ecules, with a centroid–centroid distance between the central six-membered ring and the benzene ring of 3.4349 (9) Å.

Partial Text

For the structure of isoquinoline­dione-pyrrole fused system in 1,3-dinitro­pyrrolo­[1,2-b]isoquinoline-5,10-dione, see: Du & Hitchcock (1992 ▶).




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