catena-Poly[[[aqua­(pyridine-4-carboxyl­ato-κN)silver(I)]-μ-hexa­methyl­ene­tetra­amine-κ2N:N′] dihydrate]

In the title compound, {[Ag(C6H4NO2)(C6H12N4)(H2O)]·2H2O}n, the AgI atom shows a distorted triangular pyramidal geometry,, formed by two N atoms from two hexa­methyl­ene­tetra­amine (hmt) ligands and one N atom from a pyridine-4-carboxyl­ate (4-pdc) ligand and one water mol­ecule. The hmt ligands bridge the Ag atoms, forming a chain along [001]. The carboxyl­ate group of the 4-pdc ligand is uncoordinated. O—H⋯O hydrogen bonds between the water mol­ecules and carboxyl­ate groups stabilize the structure.