Crystal structure of 2-(1,3-dioxoindan-2-yl)isoquinoline-1,3,4-trione

• Main Authors: Ghalib, Raza Murad, C. S., Chidan Kumar, Hashim, Rokiah, Sulaiman, Othman, Fun, Hoong Kun
• Format: Article
• Language: English
• Published: International Union of Crystallography 2015
• Subjects: QC1-999 Physics; T1-995 Technology(General)
• Online Access: http://eprints.usm.my/38562/1/Crystal_structure_of_2-%281%2C3-dioxoindan-2-yl%29.pdf; http://eprints.usm.my/38562/; https://doi.org/10.1107/S2056989014025997

In the title isoquinoline-1,3,4-trione derivative, C18H9NO5, the five-membered ring of the indane fragment adopts an envelope conformation with the nitrogen-substituted C atom being the flap. The planes of the indane benzene ring and the isoquinoline-1,3,4-trione ring make a dihedral angle of 82.06 (6)�. In the crystal, molecules are linked into chains extending along the bc plane via C—H� � �O hydrogen-bonding interactions, enclosing R2 2(8) and R2 2(10) loops. The chains are further connected by �–� stacking interations, with centroidto- centroid distances of 3.9050 (7) A ° , forming layers parallel to the b axis.