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Redetermination of 4,4′-di­bromo­bi­phenyl

✍ Scribed by Mohamed, Ajax K. ;Auner, Norbert ;Bolte, Michael


Publisher
International Union of Crystallography
Year
2003
Tongue
English
Weight
164 KB
Volume
59
Category
Article
ISSN
1600-5368

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Bis(2,4-di­bromo­phenyl) ether
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4-Bromo­phenyl 2,4-di­bromo­phenyl ether
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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.

4-Bromo­phenyl 2,6-di­bromo­phenyl ether
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2,4-Di­bromo­phenyl 2,6-di­bromo­phenyl
✍ Eriksson, Johan ;Eriksson, Lars ;Hu, Jiwei 📂 Article 📅 2002 🏛 International Union of Crystallography 🌐 English ⚖ 240 KB

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.

4,4′-Di­cyano­bi­phenyl
✍ Britton, Doyle ;Young Jr, Victor G. 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 214 KB

H -Dicyanobiphenyl, C 14 H 8 N 2 , has a normal structure with a twist angle of 31.8 (2) . The molecules stack with overlapping % systems and form chains held together by antiparallel CÐ NÁ Á ÁCÐN interactions. In addition, there are a number of CÐ HÁ Á ÁN interactions.

4,4′-Di­iodo­bi­phenyl
✍ Britton, Doyle 📂 Article 📅 2004 🏛 International Union of Crystallography 🌐 English ⚖ 149 KB

H -Diiodobiphenyl, C 12 H 8 I 2 , crystallizes as a homologous isomorph of the high-temperature form of p-diiodobenzene. The molecule is planar and lies on a center of symmetry. Each I atom is in contact with ®ve others at distances between 4.0 and 4.5 A Ê .