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Crystal structure and C - H⋯F hydrogen bonding in the fluorinated bis-benzoxazine: 3,3′-(ethane-1,2-diyl)bis(6-fluoro-3,4-dihydro-2H-1,3-benzoxazine)

Acta Crystallographica Section E: Crystallographic Communications, ISSN: 2056-9890, Vol: 72, Issue: Pt 10, Page: 1509-1511
2016
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The title fluorinated bisbenzoxazine, CHFNO, crystallizes with one half-molecule in the asymmetric unit, which is completed by inversion symmetry. The fused oxazine ring adopts an approximately half-chair conformation. The two benzoxazine rings are oriented anti to one another around the central C - C bond. The dominant intermolecular interaction in the crystal structure is a C - H⋯F hydrogen bond between the F atoms and the axial H atoms of the OCHN methylene group in the oxazine rings of neighbouring molecules. C - H⋯π contacts further stabilize the crystal packing.

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