catena-Poly[[silver(I)-μ-2-[(pyrazin-2-yl-κ²N¹:N⁴)amino­meth­yl]phenol] nitrate]

The Ag^I atom in the polycationic salt, {[Ag(C₁₁H₁₁N₃O)]NO₃}_n, shows a linear coordination [N—Ag—N = 175.0 (2)°]; the polymeric nature arises from bridging by the pyrazine portion of the ligand, resulting in chains extending parallel to [100]. The NO₃⁻ counter-ions surround the polymeric chain and inter­act only weakly with it [Ag...O = 2.701 (4) and 2.810 (5) Å]. Adjacent chains are linked into a three-dimensional network by O—H...O and N—H...O hydrogen bonds.