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3,6-Di-4-pyridyl­pyrrolo­[3,4-c]­pyrrole-1,4(2H,5H)-dione

✍ Scribed by Mizuguchi, Jin ;Imoda, Tomohiko ;Takahashi, Hiroo

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
204 KB
Volume
61
Category
Article
ISSN
1600-5368

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3,6-Di-3-pyridylpyrrolo[3,4-c]pyrrole-1,
3,6-Di-3-pyridylpyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione
✍ Hirota, Tsuyoshi ;Imoda, Tomohiko ;Takahashi, Hiroo ;Mizuguchi, Jin 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 152 KB

The title compound, C 16 H 10 N 4 O 2 , is an organic red pigment utilized for hydrogen gas sensors. The centrosymmetric diketopyrrolopyrrole is nearly planar and is linked to four neighbouring molecules via N-HÁ Á ÁN hydrogen bonds to form a two-dimensional network in the (201) plane.

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✍ Peifer, Christian ;Schollmeyer, Dieter ;Dannhardt, Gerd 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 360 KB

The crystal structure of the title compound, C 21 H 18 N 2 O 5 , was determined in order to study the electrocyclic reactivity of 3,4diaryl-1H-pyrrole-2,5-dione derivatives. Intermolecular hydrogen bonds form sheets.

4-(3,4-Di­methyl­phenyl)-3,5-di-2-pyridy
4-(3,4-Di­methyl­phenyl)-3,5-di-2-pyridyl-4H-1,2,4-triazole
✍ Shao, Si-Chang ;Liu, Hui-Jun ;Zhang, Shu-Ping ;Yang, Song ;Hao, Fu-Ying ;Li, Che 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 336 KB

The title compound, C 21 H 19 N 5 , has been synthesized and characterized by single-crystal X-ray diffraction. The dihedral angle between the benzene and triazole rings is 123.0 (5) . The triazole ring forms dihedral angles of 36.5 (5) and 50.1 (5) with the two pyridyl rings.