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Reinvestigation of 5,12-di­hydro-5,12-di­methyl­quino­[2,3-b]­acridine-7,4-dione

✍ Scribed by Mizuguchi, Jin ;Senju, Takatoshi

Publisher
International Union of Crystallography
Year
2003
Tongue
English
Weight
172 KB
Volume
59
Category
Article
ISSN
1600-5368

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2,9-Di­chloro-5,12-di­hydro­quino­[2,3-b
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✍ Senju, Takatoshi ;Nishimura, Naoko ;Hoki, Tomonori ;Mizuguchi, Jin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 138 KB

The title compound, C 20 H 10 Cl 2 N 2 O 2 , is one of the quinacridone derivatives known as a red pigment. The molecule has inversion symmetry. The quinacridone molecules are connected by bifurcated N-HÁ Á ÁO hydrogen bonds along [110] to form a two-dimensional hydrogen-bond network.

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3,10-Dichloro-5,12-dihydro­quino[2,3-b]acridine-7,14-dione
✍ Senju, Takatoshi ;Hoki, Tomonori ;Mizuguchi, Jin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 137 KB

The title compound, C 20 H 10 Cl 2 N 2 O 2 , is one of the quinacridone derivatives known as red pigments. The molecule has inversion symmetry. The quinacridone molecules are connected by N-HÁ Á ÁO hydrogen bonds along the [110] direction to form a ribbon structure.

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✍ Senju, Takatoshi ;Hoki, Tomonori ;Mizuguchi, Jin 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 180 KB

The title compound, C 20 H 12 N 2 S 2 Á2C 4 H 9 NO, is a solvated centrosymmetric pigment molecule (DTQ) connected to two dimethylacetamide (DMA) molecules through N-HÁ Á ÁO hydrogen bonds. One DTQ molecule is surrounded by six DMA molecules in the crystal structure. organic papers o4242 Senju et al