The crystal structure of the title compound, C~18~H~11~ClN~2~O~4~, contains intra- and intermolecular hydrogen bonds that link the ketone and hydroxyl groups. The intermolecular hydrogen bond results in the formation of a dimer with an __R__ ~2~ ^2^(12) graph-set motif.
5-(4-Methoxyphenyl)-1-(4-methylphenyl)-1H-pyrazol-3-ol
✍ Scribed by Sun, Yong-Feng ;Jia, Hong-Sheng ;Liu, Shan ;Zhu, Hong-Jun
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 1022 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The asymmetric unit of the title compound, C 17 H 16 N 2 O 2 , contains two crystallographically independent molecules, with methylphenyl and methoxyphenyl substituents in different orientations with respect to the pyrazole ring. In the crystal structure, intermolecular O-HÁ Á ÁN and C-HÁ Á ÁO hydrogen bonds link the molecules; the O-HÁ Á ÁN bonds generate centrosymmetric dimers, and these are connected by C-HÁ Á ÁO bonds to generate one-dimensional double-stranded chains.
📜 SIMILAR VOLUMES
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
In the title compound, C 17 H 18 O 4 , the hydroxyl and methoxyphenyl substituents are in axial positions. The heterocyclic ring adopts a half-chair conformation. The molecules are linked by OÐHÁ Á ÁO hydrogen bonds, leading to dimerization.