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Pyrazoles. 19. Selective thermolysis reactions of bromo-1-nitro-1H-pyrazoles. Formation of 3-nitro-1H- vs. 4-nitro-1H-pyrazoles

✍ Scribed by Juffermans, J. P. H.; Habraken, Clarisse L.


Book ID
115511267
Publisher
American Chemical Society
Year
1986
Tongue
English
Weight
669 KB
Volume
51
Category
Article
ISSN
0022-3263

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📜 SIMILAR VOLUMES


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The structure of the title compound, C 7 H 11 N 3 O 3 , consists of molecules that pack in a linear hydrogen-bonded ribbon motif. This hydrogen-bonding arrangement is constructed through two dimer formations, one that is atypical of pyrazoles (N-HÁ Á ÁN) and the other via an interaction from the hyd

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In the title compound, C~14~H~13~N~5~O~3~, the dihedral angle formed between the five-membered pyrazole and the benzimidazole ring system is 68.2 (2)°.

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✍ Etti, S. ;Shanmugam, G. ;Ponnuswamy, M. N. ;Sridhar, R. ;Murugan, R. ;Perumal, P 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 240 KB

Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.002 A Ê R factor = 0.043 wR factor = 0.128 Data-to-parameter ratio = 12.5 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

1-(4-Nitro­phen­yl)-3,5-diphenyl-4,5-dih
✍ Ge, Wen-Zhong 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 143 KB

The asymmetric unit of the title compound, C~21~H~17~N~3~O~2~·0.5C~3~H~6~O, is composed of two independent but similar molecules. The pyrazole ring in each molecule is almost planar and the N—N bond lengths in the pyrazole rings are 1.384 (2) and 1.385 (2) Å.