Received 5 December 2012
The entire title molecule, C42H36O6, is completed by the application of a twofold axis. The 4-phenoxybenzoyl groups at the 1- and 8-positions of the naphthalene ring system are aligned almost antiparallel. The dihedral angle between the best planes of the benzene rings of the benzoyl moieties and the naphthalene ring system is 70.52 (5)° and that between the best planes of the benzene rings of the phenoxy groups and the naphthalene ring system is 27.80 (6)°. In the crystal, molecules are linked into a three-dimensional architecture by C-HO and C-H interactions.
For electrophilic aromatic aroylation of the naphthalene core, see; Okamoto & Yonezawa (2009); Okamoto et al. (2011). For the structures of closely related compounds, see: Hijikata et al. (2010); Sasagawa et al. (2012); Muto et al. (2010); Nakaema et al. (2008).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell refinement: PROCESS-AUTO; data reduction: PROCESS-AUTO; program(s) used to solve structure: Il Milione (Burla et al., 2007); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2459 ).
The authors express their gratitude to Professor Keiichi Noguchi, Instrumentation Analysis Center, Tokyo University of Agriculture & Technology, for technical advice. This work was partially supported by the Shorai Foundation for Science and Technology.
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