1-[(Anthracen-9-yl)carbonyl]-2,7-dimethoxynaphthalene: a chain-like structure composed of face-to-face type dimeric molecular aggregates

Abstract

The asymmetric unit of the title compound contains two independent mol­ecules (A and B). In the crystal, mol­ecules of each conformer make a face-to-face type dimeric mol­ecular aggregate with two pairs of C—H⋯π hydrogen bonds (A) or a pair of (sp 2)C—H⋯O hydrogen bonds (B). The dimeric mol­ecular aggregates composed of same conformers are linked to each other into a chain through π–π stacking inter­actions (A) or a pair of C—H⋯π hydrogen bonds (B) along the b axis. The chains are aligned along the c axis by weak van der Waals inter­actions or (sp 2)C—H⋯O=O hydrogen bonds, and they are alternately stacked along the a axis.

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 (1r,2s)-1,2-Bis(4-Chlorophenyl)-3,8-Dimethoxyacenaphthene-1,2-Diol: Tetrameric String of Four Conformers Connected by Classical Hydrogen Bonds and Molecular Accumulation Alignment by Linking of the Tetramers With the Aid of Non-Classi

“…The authors' recent work has focused on peri-aroylnaphthalene compounds and the homologous/analogous substances. [11][12][13][14][15][16][17][18][19][20] According to the X-ray crystal structural analyses of ninety peri-aroylnaphthalene compounds, the two aroyl groups are non-coplanarly situated to the naphthalene ring and ordinary oriented in an opposite direction (anti-orientation). The molecular packing of peri-aroylnaphthalene compounds are mainly stabilized by cooperation of several kinds of weak non-covalent-bonding interactions, i.e., four kinds of nonclassical hydrogen bonds, (sp 2 )C-H···O=C hydrogen bond, (sp 3 )C-H···O=C hydrogen bond, (sp 3 )C-H···OR hydrogen bond, and C-H···π hydrogen-bonding interaction, and π···π stacking interaction are observed in decreasing order of frequency.…”