Hijikata Daichi, Takada Teruhisa, Nagasawa Atsushi, Okamoto Akiko, Yonezawa Noriyuki
Department of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan.
Acta Crystallogr Sect E Struct Rep Online. 2010 Oct 23;66(Pt 11):o2902-3. doi: 10.1107/S1600536810042170.
In the title mol-ecule {systematic name: 2,7-dimethoxy-8-(4-phenoxybenzoyl)naphthalen-1-ylmethan-one}, C(38)H(28)O(6), the 4-phen-oxy-benzoyl units adopt a syn orientation with respect to the naphthalene ring system. The inter-nal benzene rings, A and B, make dihedral angles of 86.72 (5) and 79.22 (5)° with the naphthalene ring system. The two terminal benzene rings, C and D, of the 4-phen-oxy-benzoyl groups are twisted with respect to benzene rings A and B, with dihedral angles of A/C = 62.72 (8) and B/D = 87.61 (6)°. In the crystal, H atoms in the naphthalene system make two types of inter-molecular C-H⋯O inter-actions with the carbonyl O atom and the phenyl etheral O atom of neighbouring mol-ecules. Mol-ecules are further linked by C-H⋯π inter-actions involving a H atom of terminal benzene ring D and the π-system of the inter-nal benzene ring A, forming dimers centered about an inversion center.
在标题分子{系统命名：[2,7 - 二甲氧基 - 8 - (4 - 苯氧基苯甲酰基)萘 - 1 - 基](4 - 苯氧基苯基)甲酮}，C(38)H(28)O(6)中，4 - 苯氧基苯甲酰基单元相对于萘环系统呈顺式取向。内部的苯环A和B与萘环系统的二面角分别为86.72 (5)°和79.22 (5)°。4 - 苯氧基苯甲酰基的两个末端苯环C和D相对于苯环A和B发生扭曲，二面角A/C = 62.72 (8)°，B/D = 87.61 (6)°。在晶体中，萘环系统中的H原子与相邻分子的羰基O原子和苯醚O原子形成两种分子间C - H⋯O相互作用。分子通过涉及末端苯环D的一个H原子和内部苯环A的π - 体系的C - H⋯π相互作用进一步连接，形成以一个对称中心为中心的二聚体。
