9,9-Bis(cyanoethanoic)fluorene
✍ Scribed by Liu, Hongxia
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 431 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
The title compound, C 19 H 16 N 2 , crystallizes with two molecules in the asymmetric unit related by a non-crystallographic plane of symmetry. The three fused rings of the fluorene system are almost coplanar. The cyanoethanoic groups display extended conformations and are nearly perpendicular to the fluorene plane. The packing of the molecules in the crystal structure is mainly due to van der Waals forces.
📜 SIMILAR VOLUMES
In the solid state, the title compound, C 25 H 16 Br 2 O 2 , shows significant deviations of the fluorene ring system from planarity. A layered hydrogen-bonded structure is formed that may serve as a model for the solid-state structure of phenol-functionalized polyfluorene.