Výsledky vyhledávání - "Hiroaki Iitsuka"

Akademický článek

Crystal structure of 1,2-bis(4-fluorophenyl)-1-hydroxy-2,3,8-trimethoxyacenaphthene: formation of a five-membered intramolecular O—H...O hydrogen-bonded ring

Autor: Hiroaki Iitsuka, Kun Li, Miyuki Kobayashi, Kikuko Iida, Noriyuki Yonezawa, Akiko Okamoto

Publikováno v: Acta Crystallographica Section E: Crystallographic Communications, Vol 77, Iss 2, Pp 175-179 (2021)

The structure of the title compound, C27H22F2O4, at 193 K has triclinic (P\overline{1}) symmetry. The hydroxy and methoxy groups at the 1,2-positions of the acenaphthene core display a cis configuration. Both substituents are involved in the formatio

Externí odkaz: https://doaj.org/article/ce2f35b6e44e4141a4e66cc176d84f26

Zobrazit plný text záznamu

Distinguishment of Weak Interactions of Hydrogen Atoms Bound to Carbon Atoms: X-Ray Crystal Structural and Hirshfeld Surface Analyses of 2- Hydroxy-7-methoxy-3-(2,4,6-trimethylbenzoyl)naphthalene with the 2- Methoxylated Homologue

Autor: Akiko Okamoto, Noriyuki Yonezawa, Kikuko Iida, Toyokazu Muto, Miyuki Kobayashi, Hiroaki Iitsuka, Kun Li

Publikováno v: Letters in Organic Chemistry. 19:757-765

Abstract: X-ray crystal and Hirshfeld surface analyses of 2-hydroxy-7-methoxy-3-(2,4,6- trimethylbenzoyl)naphthalene and its 2-methoxylated homologue show quantitatively and visually distinct molecular contacts in crystals and minute differences in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cbb7ca6bbe4f4a4dde649a2cc883c94
https://doi.org/10.2174/1570178619666211231105233

Zobrazit plný text záznamu

The crystal structure of (1R *,2S *)-1,2-bis(2-fluorophenyl)-3,8-dimethoxyacenaphthene-1,2-diol, C26H20F2O4

Autor: Kun Li, Noriyuki Yonezawa, Hiroaki Iitsuka, Akiko Okamoto, Kikuko Iida, Keiichi Noguchi, Miyuki Kobayashi

Publikováno v: Zeitschrift für Kristallographie - New Crystal Structures. 236:1301-1304

C26H20F2O4, monoclinic, P21/n (no. 14), a = 10.3707(2) Å, b = 12.0232(2) Å, c = 15.7744(3) Å, β = 90.907(1)°, V = 1966.65(6) Å3, Z = 4, R gt (F) = 0.0371, wR ref (F 2) = 0.1013, T = 193.15 K.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c5143a2433fa44d8e05c888aa5b398b
https://doi.org/10.1515/ncrs-2021-0314

Zobrazit plný text záznamu

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

Autor: Noriyuki Yonezawa, Akiko Okamoto, Kikuko Iida, Hiroaki Iitsuka, Miyuki Kobayashi, Rei Sakamoto, Kun Li

Publikováno v: European Journal of Chemistry. 12:147-153

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, t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::48581577a794bf03d498a2e999ccca0e
https://doi.org/10.5155/eurjchem.12.2.147-153.2114

Zobrazit plný text záznamu

The crystal structure of 1,8-bis(4-methoxybenzoyl)naphthalene-2,7-diyl dibenzoate, C40H28O8

Autor: Akiko Okamoto, Miyuki Kobayashi, Noriyuki Yonezawa, Kun Li, Hiroaki Iitsuka, Kikuko Iida

Publikováno v: Zeitschrift für Kristallographie - New Crystal Structures. 236:945-947

C40H28O8, orthorhombic, Pna21 (no. 33), a = 27.0291(4) Å, b = 14.5593(2) Å, c = 7.95172(10) Å, V = 3129.20(7) Å3, Z = 4, R gt (F) = 0.0276, wR ref (F 2) = 0.0690, T = 193 K.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2ee2385bc9cac74199281aa159de2fc
https://doi.org/10.1515/ncrs-2021-0160

Zobrazit plný text záznamu

Fluoro Group Pivoting Dual Hydrogen Bonding Intramolecular Bridge for 1,2-Bis(2-fluorophenyl)acenaphthenediol Molecule in Solution: NMR Spectrometrical Confirmation of Simultaneous Participation of F–C(sp2) Group to Through-space-couplings with Aromatic and Hydroxy Hydrogen Atoms

Autor: Miyuki Kobayashi, Noriyuki Yonezawa, Takahiro Mido, Hiroaki Iitsuka, Keiichi Noguchi, Akiko Okamoto

Publikováno v: Chemistry Letters. 49:295-298

Dual hydrogen bonding intramolecular bridge pivoted by fluoro group for 1,2-bis(2-fluorophenyl)-3,8-dimethoxy-acenaphthenediol in solution is ascertained as simultaneous contribution of mutual fluo...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f4be0e6910352a8b7dfec19a68c3d3c3
https://doi.org/10.1246/cl.190903

Zobrazit plný text záznamu

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

Autor: Hiroaki Iitsuka, Akiko Okamoto, Kazuki Ogata, Takahiro Mido, Noriyuki Yonezawa, Takeshi Yokoyama, Genta Takahara

Publikováno v: European Chemical Bulletin. 6:273

Crystal structure of (1 R ,2 S )-1,2-bis(4-chlorophenyl)-3,8-dimethoxyacenaphthene-1,2-diol, C 26 H 20 O 4 Cl 2 , is reported and discussed from the viewpoints of characteristics in spatial organization, i.e. , single molecular structures of four con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24a4dce0512dec9738463d4213621705
https://doi.org/10.17628/ecb.2017.6.273-280

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání