Crystal structure of 1,8-dibenzoyl-2,7-diphenoxynaphthalene

Abstract

In 1,8-dibenzoyl-2,7-di­phen­oxy­naphthalene, the planes of the benzene rings of the four naphthalene substituents are almost perpendicular to that of the naphthalene core.

Crystal Structure of 1,8-Bis(4-Fluorobenzoyl)naphthalene-2,7-Diyl Dibenzoate: Role of (Sp2)c–h…f Hydrogen Bonding as Distinctly Strong Interaction Among Non-Classical Hydrogen Bonds Contributing Stability of the Crystal

“…17,18 Molecular structures of 1,8-diaroylated 2,7-dialkoxynaphthalene compounds in crystals have common features that two aroyl groups are noncoplanarly located to the 2,7-dialkoxynaphthalene core and oriented in an opposite direction 19 with a few exceptional compounds bearing unidirectional-alignment of aroyl groups. [20][21][22] The molecular packing of 1,8-diaroylated 2,7-dialkoxynaphthalene compounds are mainly stabilized by weak hydrogen bonds.…”

Crystal structure of 1-(4-hydroxybenzoyl)-2,7-dimethoxynaphthalene: Contribution of classical and non-classical hydrogen bonding interactions to the molecular packing structure

“…On the other hand, the aromatic ketone compounds bearing some restriction against structural alteration also have non-coplanar alignment of aromatic rings with relatively loose conformational fixation of substituents. Recently, the authors have found highly efficient diaroylation at peri (1,8)-positions of 2,7-dialkoxynaphthalene compounds [5,6]. peri-Aroylated naphthalene compounds thus obtained are proved to have non-coplanarly accumulated aromatic-rings-structure in crystal, i.e., the aroyl groups are twistedly situated to the naphthalene ring core in a perpendicular fashion [7][8][9].…”

“…Recently, the authors have found highly efficient diaroylation at peri (1,8)-positions of 2,7-dialkoxynaphthalene compounds [5,6]. peri-Aroylated naphthalene compounds thus obtained are proved to have non-coplanarly accumulated aromatic-rings-structure in crystal, i.e., the aroyl groups are twistedly situated to the naphthalene ring core in a perpendicular fashion [7][8][9]. Besides, the two aroyl groups are ordinarily oriented in an opposite direction with a few exceptional compounds bearing unidirectionally-aligned aroyl groups [10,11].…”