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New molecular scaffolds of C‐, Z‐ and box‐shaped configurations are constructed by fusing phenazine and pyrene units with oxanorbornene. As revealed by X‐ray crystallography, the C‐shaped molecules exhibit two interesting π‐π stacking modes of phenazine depending on the substituting groups, and the box‐shaped molecule accommodates two chloroform molecules in the cavity and forms H‐bonds with another...