1,8-Bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene

✍ Scribed by Nakaema, Kosuke ;Okamoto, Akiko ;Noguchi, Keiichi ;Yonezawa, Noriyuki

• Book ID: 104491756
• Publisher: International Union of Crystallography
• Year: 2007
• Tongue: English
• Weight: 737 KB
• Volume: 63
• Category: Article
• ISSN: 1600-5368
• DOI: 10.1107/s1600536807045114

✦ Synopsis

The title compound, C 26 H 18 Cl 2 O 4 , has two 4-chlorobenzoyl groups that are in an anti orientation and are approximately parallel. The interplanar angle between the mean planes of the two benzene rings is 7.99 (8) . These 4-chlorobenzoyl groups are twisted away from the attached naphthalene ring. The two interplanar angles between the mean planes of the chlorophenyl groups and the naphthalene ring system are 71.55 (7) and 71.98 (7) . The torsion angles between the carbonyl groups and the naphthalene ring are 64.9 (2) and 64.4 (2) , which are far larger than those between the 4-chlorophenyl groups and the carbonyl groups of 0.0 (2) and À3.8 (3) . The chlorophenyl and carbonyl groups are almost coplanar. Intermolecular hydrogen bonds exist between aromatic H and carbonyl O atoms.