Crystal structure of 7-methoxy-1-{[(E)-2,6-dimethylphenylimino] (phenyl)methyl}-2-naphthol: Clarification of non-covalent bonding interactions on the basis of spatial organization of single molecular structure and the molecular alignments

Crystal structure of 1-benzoyl-2,7-dimethoxy-8-(3,5-dimethylbenzoyl) naphthalene: Head-to-head fashioned molecular motif for accumulating weak non-classical hydrogen bonds

“…One of efficient approaches for this purpose is the study of reliable homologous and/or analogous compounds that can be analyzed hierarchically to reveal the relationship among molecular structure, non-classical hydrogen bonds and molecular accumulation alignment. The authors have reported single molecular structures and the structural features of the molecular packings for roughly ninety compounds having 1,8diaroylated naphthalene skeleton or the homologous/ analogous structure via the Cambridge Structure Database (CSD) [20][21][22][23][24][25][26]. Molecular structures of 1,8-diaroylated 2,7dialkoxynaphthalene compounds in crystal solid state have common features of two aroyl groups being non-coplanarly located to the 2,7-dialkoxynaphthalene plane and usually oriented in an opposite direction accompanying with a few exceptional compounds bearing unidirectional-alignment of aroyl groups.…”

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.…”