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Crystal structure of bis(1,8-dibenzoyl-7-methoxynaphthalen-2-yl)terephthalate: Terephthalate phenylene moiety acts as bidentate hydrogen acceptor of bidirectional C-H···π non-classical hydrogen bonds Iida, Kikuko Sakamoto, Rei Li, Kun Kobayashi, Miyuki Iitsuka, Hiroaki Yonezawa, Noriyuki Okamoto, Akiko Aggregation Weak interactions Conformation analysis Aromatic ring structure Bidentate hydrogen acceptor Bidirectional C-H···π interactions The title compound lies about a crystallographic inversion centre located at the terephthalate moiety. The two peri-benzoylnaphthalene units having atrope chirality are also situated centrosymmetrically. In the two peri-benzoylnaphthalene moieties, two benzoyl groups are substituted at 1 and 8 carbons of the naphthalene ring in anti-orientation. Then two absolute configurations of peri-benzoylnaphthalene moieties are consequently assigned as complementary to each other, i.e., one unit has R,R-configuration and the other S,S-one, respectively. The two benzoyl groups in peri-benzoylnaphthalene moiety and the terephthalate phenylene ring are non-coplanarly located against the naphthalene ring. The dihedral angles of each benzene ring of two benzoyl groups and terephthalate unit with the naphthalene ring are 73.73 and 75.96, and 71.79°. In molecular packing, several kinds of weak interactions are responsible to induce three-dimensional molecular network. Especially, the synergetic effect realized through the bidentate hydrogen acceptor function in bidirectional C-H···π non-classical hydrogen bonds by the terephthalate phenylene ring moiety plausibly plays the determining role. Atlanta Publishing House LLC 2021-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/plain https://www.eurjchem.com/index.php/eurjchem/article/view/2114 10.5155/eurjchem.12.2.147-153.2114 European Journal of Chemistry; Vol. 12 No. 2 (2021): June 2021; 147-153 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/2114/pdf_2114 https://www.eurjchem.com/index.php/eurjchem/article/view/2114/2681 Copyright (c) 2021 Authors