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  • Title: 7:8,9:10-dibenzo-1,2,3,4-tetrafluoro- triphenylene: synthesis, structure, and photophysical properties of a novel [5]helicene.
    Author: Morrison DJ, Trefz TK, Piers WE, McDonald R, Parvez M.
    Journal: J Org Chem; 2005 Jun 24; 70(13):5309-12. PubMed ID: 15960537.
    Abstract:
    A simple and efficient synthesis and crystallographic analysis of the partially fluorinated 7:8,9:10-dibenzo-1,2,3,4-tetrafluorotriphenylene, 1, in 59% yield is reported. Compound 1 is a blue luminescent [5]helicene in both solution and the solid state. It spontaneously forms enantiomorphous single crystals from racemic samples and exhibits slipped, face-to-face F...C(pi) contacts within the stacks of molecules.
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