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Two CuI atoms are present in the asymmetric unit of the polymeric title complex, [Cu2(C20H12N4)(C10H8N2)]n. One of the cations is located on an inversion centre and is linearly coordinated by the N atoms of benzimidazolyl moieties of the 1,2-bis(2-benzimidazolium)benzene ligand, whereas the second cation is located on a twofold rotation axis and is tetrahedrally coordinated by two N atoms of a chelating 2,2′-bipyridine ligand and two other N atoms of the benzimidazolyl moieties. The bridging character of the 1,2-bis(2-benzimidazolyl)benzene leads to the formation of a three-dimensional framework structure.