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In the title complex, {[Ag(C 8 H 7 N 5 )]ClO 4 ·H 2 O}  n  , the multidentate dipyrazin-2-ylamine acts as a μ 2 -bridging link with an  anti – syn  configuration, assembling the Ag I  ions into a zigzag chain structure. The Ag I  ion is linearly coordinated by two dipyrazin-2-ylamine ligands through two pyrazine N atoms. (ClO 4− )⋯π(pyrazine) [O⋯centroid distances of 3.612 (3) and 3.664 (1) Å] and π–π inter­actions [centroid–centroid distance = 3.518 (2) Å] as well as O—H⋯O and N—H⋯O hydrogen-bonds assemble the chains into a three-dimensional supra­molecular aggregation.

catena-Poly[[silver(I)-μ-dipyrazin-2-ylamine] perchlorate monohydrate]