The title compound, C 12 H 6 Br 4 O, is the fourth well characterized of a total of potentially 209 different brominated diphenyl ethers. Salient intermolecular interactions are between ether O and aromatic C atoms, and between a bromine substituent and the aromatic ring system.
2,7-Dibromo-2,4,6-cycloheptatrien-1-one (2,7-dibromotropone)
✍ Scribed by Kubo, Kanji ;Matsumoto, Taisuke ;Mori, Akira
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 157 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, C 7 H 4 Br 2 O, has mirror symmetry perpendicular to the tropone ring, and forms a head-to-head association of two nearly parallel molecules. Intermolecular -, halogen-halogen and C-HÁ Á ÁO interactions are observed in the crystal structure.
📜 SIMILAR VOLUMES
Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.005 A Ê Disorder in main residue R factor = 0.033 wR factor = 0.085 Data-to-parameter ratio = 14.4 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
The molecule of the title compound, C 12 H 10 Br 2 , displays crystallographic inversion symmetry and is essentially planar. Bond lengths show the typical naphthalene pattern. The crystal packing shows no short HÁ Á ÁBr, BrÁ Á ÁBr or C-HÁ Á Á contacts.