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In the title compound, [Ag 2 (C 5 H 2 N 2 O 4 )(NH 3 ) 2 ], each of the two Ag I  atoms is coordinated by two N atoms from an ammonia mol­ecule and a 5-carb­oxy-1 H -imidazole-4-carboxyl­ate ligand in an almost linear geometry, and by one carboxyl­ate O atom with a weak inter­action. The Ag atoms are assembled into a linear tetra­mer through Ag⋯Ag inter­actions. Each Ag tetra­mer is linked by four 5-carb­oxy-1 H -imidazole-4-carboxyl­ate ligands, forming a puckered chain. The complex involves a strong intra­molecular O—H⋯O hydrogen bond.

acta crystallographica. section e

(μ-5-Carboxy-1H-imidazole-4-carboxylato-κ4N1,O5:N3,O4)bis[amminesilver(I)]