Crystal structure and Hirshfeld surface analysis of 2-hydroxy-7-methoxy-1,8-bis(2,4,6-trichlorobenzoyl)naphthalene

• Main Authors: Toyokazu Muto, Kikuko Iida, Keiichi Noguchi, Noriyuki Yonezawa, Akiko Okamoto
• Format: Article
• Language: English
• Published: International Union of Crystallography 2019-10-01
• Series: Acta Crystallographica Section E: Crystallographic Communications
• Subjects: crystal structure; non-coplanar accumulated aromatic rings structure; twisted aroyl group; intramolecular O—H...O hydrogen bond; short contacts involving chloro group; herringbone pattern; Hirshfeld surface analysis; two-dimensional fingerprint plots
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S2056989019012118
• ISSN: 2056-9890

In the title compound, C25H12Cl6O4, the two carbonyl groups are oriented in a same direction with respect to the naphthalene ring system and are situated roughly parallel to each other, while the two 2,4,6-trichlorobenzene rings are orientated in opposite directions with respect to the naphthalene ring system: the carbonyl C—(C=O)—C planes subtend dihedral angles of 45.54 (15) and 30.02 (15)° to the naphthalene ring system are. The dihedral angles formed by the carbonyl groups and the benzene rings show larger differences, the C=O vectors being inclined to the benzene rings by 46.39 (16) and 79.78 (16)°. An intramolecular O—H...O=C hydrogen bond forms an S(6) ring motif. In the crystal, no effective intermolecular hydrogen bonds are found; instead, O...Cl and C...Cl close contacts are observed along the 21 helical-axis direction. The Hirshfeld surface analysis reveals several weak interactions, the major contributor being Cl...H/H...Cl contacts.