2-(4-Bromophenyl)-5-(3,4-dimethoxyphenyl)-3,4-dimethylthiophene
✍ Scribed by Lei, Yingjie ;Shi, Jixian ;Yu, Mei ;Zheng, Xiufang
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 85 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.003 A Ê R factor = 0.050 wR factor = 0.119 Data-to-parameter ratio = 16.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The title compound, C 26 H 30 O 7 , was obtained by the Grignard reaction of one molecule of 4-methoxybenzylmagnesium chloride with two molecules of 3,5-dimethoxybenzaldehyde. The two new chiral centers have the same absolute con®guration R (S), and the two hydroxyl groups, surrounded by the three b
Single-crystal X-ray study T = 183 K Mean '(C±C) = 0.005 A Ê R factor = 0.026 wR factor = 0.063 Data-to-parameter ratio = 15.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The title compound, C 12 H 7 Br 3 O, belongs to a group of ¯ame retardants known as polybrominated diphenyl ethers (PBDE). Salient features of the packing of the title compound are in®nite intermolecular BrÁ Á ÁBr contact chains along the b direction.