Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Chitoshi Kitamura"'
Autor:
Hidemi Nakagawa, Chitoshi Kitamura
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 12, Pp 1845-1849 (2017)
1-Hydroxy-4-propyloxy-9,10-anthraquinone, C17H14O4, (I), and its acetyl derivative, 4-acetyloxy-4-propyloxy-9,10-anthraquinone, C19H16O5, (II), were synthesized from the commercially available dye quinizarin. In both compounds, the anthraquinone fram
Externí odkaz:
https://doaj.org/article/d6a3764ec1fe4b34a87ed3f75078740b
Publikováno v:
IUCrData, Vol 1, Iss 6, p x160906 (2016)
In the title compound, C14H6N2O8, the anthraquinone unit is essentially planar [maximum deviation = 0.0645 (10) Å], and there are two intramolecular O–H...O hydrogen bonds forming S(6) motifs. The planes of the two nitro substituents make dihedral
Externí odkaz:
https://doaj.org/article/c5af4334964f41c193492dae766a8fe7
Publikováno v:
IUCrData, Vol 1, Iss 5, p x160753 (2016)
In the molecule of the title compound, C17H13BrO4, the anthraquinone ring system is slightly bent, with a dihedral angle of 169.99 (7)° between the planes of the two benzene rings. The side chain (O—C—C—C—Br) has a gauche–gauche conformati
Externí odkaz:
https://doaj.org/article/1440eea3d7d34c1d8dca3def9ca76685
Publikováno v:
IUCrData, Vol 1, Iss 3, p x160473 (2016)
In the molecule of the title compound, C50H49NO2, the acenaphtho[1,2-j]fluoranthene-4,5-dicarboximide framework has an approximately planar structure [maximum deviation = 0.124 (3) Å] and subtends a dihedral angle of 62.94 (8)° with the pendant phe
Externí odkaz:
https://doaj.org/article/28e6f2ccf8b94926931b626303c30d37
Autor:
Chitoshi Kitamura, Sining Li, Munenori Takehara, Yoshinori Inoue, Katsuhiko Ono, Takeshi Kawase
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 71, Iss 7, Pp o504-o505 (2015)
The asymmetric unit of the title compound, C18H16O4, contains two crystallographically independent molecules. The anthraquinone ring systems are slightly bent with dihedral angles of 2.33 (8) and 13.31 (9)° between the two terminal benzene rings. In
Externí odkaz:
https://doaj.org/article/c42ee5363d6b4b1282fe8113482d5096
Publikováno v:
Acta Crystallographica Section E, Vol 70, Iss 10, Pp o1130-o1130 (2014)
In an attempt to brominate 1,4-dipropoxy-9,10-anthraquinone, a mixture of products, including the title compound, C14H7BrO4, was obtained. The molecule is essentially planar (r.m.s. deviation = 0.029 Å) and two intramolecular O—H...O hydrogen bond
Externí odkaz:
https://doaj.org/article/32715c8e25c54f7a9d855c612427a39d
Autor:
Chitoshi Kitamura, Takeshi Kawase
Publikováno v:
Acta Crystallographica Section E, Vol 69, Iss 11, Pp o1597-o1597 (2013)
The asymmetric unit of the title compound, C14H6O4, contains three independent molecules (A, B and C). In molecule C, there are two disordered sets of two carbonyl O atoms [occupancies = 0.643 (11) and 0.357 (11)]. All three molecules are non-planar
Externí odkaz:
https://doaj.org/article/d08804426fd84b8783d7e81f2dd2de6c
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 12, Pp o3323-o3323 (2012)
The whole molecule of the title compound, C14H8I2, is generated by crystallographic twofold symmetry. The molecule is planar [maximum deviation = 0.0323 (6) Å] with the I atoms displaced from the mean plane of the phenanthrene ring system by only 0.
Externí odkaz:
https://doaj.org/article/bccaf08a7def44ab9542ce1d4da87d1d
Autor:
Akira Ohta, Kazuki Hattori, Takashi Kobayashi, Hiroyoshi Naito, Takeshi Kawase, Chitoshi Kitamura
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 10, Pp o2843-o2843 (2012)
The title compound, C16H12O4, crystallizes with two half-molecules in the asymmetric unit, each of which is completed by a crystallographic inversion center. The two crystallographically independent molecules have almost the same geometry and are alm
Externí odkaz:
https://doaj.org/article/987ffe4a5a9b4fbf85bb879aaf13b66f
Autor:
Akira Ohta, Kazuki Hattori, Takeshi Kawase, Takashi Kobayashi, Hiroyoshi Naito, Chitoshi Kitamura
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 8, Pp o2587-o2587 (2012)
Molecules of the title compound, C18H16O6, are almost planar [maximum deviation = 0.096 (4) Å] and reside on crystallographic centres of inversion. They adopt a conformation in which the Cmethyl—O bonds are directed along the molecular short axis
Externí odkaz:
https://doaj.org/article/f7878ce9a1754646a26f7ed43302996b