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In the crystal of the title compound, C 25 H 20 Br 2 N 22+ ·2ClO 4− , inter­molecular N—H⋯O and C—H⋯O hydrogen bonds, along with C—H⋯π inter­actions, stabilize the crystal structure.

4,4′-[(2,7-Dibromofluorene-9,9-diyl)dimethylene]dipyridinium bis(perchlorate)