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In the title compound, [Ag 2 (C 14 H 14 N 4 ) 2 ](C 12 H 7 O 4 ) 2 ·4H 2 O, the dinuclear dication has crystallographically imposed inversion symmetry. Each Ag I  ion is bicoordinated in a slightly distorted linear coordination geometry by the N atoms of two ligands, resulting in the formation of a 22-membered metallamacrocycle. In the dication, π–π inter­actions are observed between the imidazole rings, with centroid–centroid distances of 3.528 (3) Å and dihedral angles of 9.92 (9)°. The crystal structure is stabilized by inter­molecular O—H⋯O hydrogen bonds and π–π inter­actions involving the benzene rings of adjacent dications, with centroid–centroid distances of 3.651 (2) Å.

acta crystallographica. section e

Bis[μ-1,2-bis(1H-imidazol-1-ylmethyl)benzene-κ2N3:N3′]disilver(I) bis(4-carboxynaphthalene-1-carboxylate) tetrahydrate