The title compound, C24H16O4, crystallized with two independent molecules in the asymmetric unit. Both carbonyl groups in these molecules form intramolecular O—H...O=C hydrogen bonds with neighbouring hydroxy groups, affording six-membered cyclic structures. In the crystal, dimeric aggregates arise from two intermolecular O—H...O=C hydrogen bonds between both independent molecules, forming head-to-tail square-shaped cyclic ...O...H...O...H... hydrogen bonds. These dimeric aggregates are connected into layers in thebcplane by intermolecular (naphthalene)C—H...O=C interactions. On the other hand, the analogous compound bearing methoxy groups at the 2- and 7-positions of the naphthalene ring, namely 1,8-dibenzoyl-2,7-dimethoxynaphthalene [Nakaemaet al.(2008).Acta Cryst.E64, o807], forms a three-dimensional molecular networkviaC—H...O=C and π–π interactions between the benzoyl groups. These results show that the intramolecular O—H...O=C hydrogen bonds in the title compound control the orientations of the benzoyl groups and thus promote the formation of the cyclic intermolecular O—H...O=C interactions involving the same donor and acceptor groups in pairs of molecules.
标题化合物
C24H16O4 在不对称单元中结晶出两个独立的分子。这些分子中的两个羰基与邻近的羟基形成分子内 O-H...O=C 氢键,形成六元环状结构。在晶体中,二聚体由两个独立分子之间的两个分子间 O-H...O=C 氢键产生,形成头对尾的方形环状...O...H...O...H...氢键。这些二聚体通过分子间(
萘)C-H...O=C 相互作用在平面上连接成层。另一方面,在
萘环的 2- 位和 7- 位含有甲氧基的类似化合物,即 1,8- 二苯甲酰基-
2,7-二甲氧基萘 [Nakaemaet al.(2008).Acta Cryst.E64, o807],通过苯甲酰基间的 C-H...O=C 和 π-π 相互作用形成了三维分子网络。这些结果表明,标题化合物中的分子内 O-H...O=C 氢键控制了苯甲酰基团的取向,从而促进了分子间 O-H...O=C 循环相互作用的形成,这些相互作用涉及成对分子中相同的供体和受体基团。