Experimental Crystal data

R factor = 0.037; wR factor = 0.096; data-to-parameter ratio = 12.7. In the title compound, C36H24O6, the benzoyl groups at the 1-and 8-positions of the naphthalene system are in an anti orientation. Both carbonyl groups form intramolecular O— H O hydrogen bonds with hydroxy groups affording six-membered rings. The benzene rings of the benzoyl groups make dihedral angles of 59.26 (13) and 59.09 (13) with the naphthalene ring system. Zigzag C—H O chains and ladder C—H O chains between the phenoxybenzoyl groups along the ab diagonals form an undulating checkered sheet. The molecules are further connected into a three-dimensional network by C—H interactions. Related literature For electrophilic aromatic aroylation of the naphthalene core, see: Okamoto & Yonezawa (2009); Okamoto et al. (2011, 2013). For the structures of (2,7-dimethoxynaphthalene-1,8-diyl)bis(4-fluorophenyl)dimethanone and 2,7-dimethoxy-1,8-bis(4-phenoxybenzoyl)naphthalene, see: Watanabe et al. (2010) andr Hijikata et al. (2010), respectively