In the title compound, {[Ag(C(6)H(4)NO(2))(C(6)H(12)N(4))(H(2)O)]·2H(2)O}(n), the Ag(I) atom shows a distorted triangular pyramidal geometry,, formed by two N atoms from two hexa-methyl-ene-tetra-amine (hmt) ligands and one N atom from a pyridine-4-carboxyl-ate (4-pdc) ligand and one water mol-ecule. The hmt ligands bridge the Ag atoms, forming a chain along [001]. The carboxyl-ate group of the 4-pdc ligand is uncoordinated. O-H⋯O hydrogen bonds between the water mol-ecules and carboxyl-ate groups stabilize the structure.
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