catena-Poly[[lead(II)-μ-(2-oxidobenz­aldehyde isonicotinoylhydrazonato)] methanol monosolvate]

The Pb atom in the polymeric title compound, {[Pb(C(13)H(9)N(3)O(2))]·CH(3)OH}(n), is five-coordinated within an N(2)O(2) donor set and a lone pair of electrons, as the N-isonicotinamido­salicylaldiminate ligand coordinates the Pb(II) atom via the O,N,O′-donors and simultaneously bridges a neighbouring Pb atom via the pyridine N atom; the coordination geometry is based on a trigonal bipyramid with the O atoms in axial positions. The resulting supra­molecular chain is a 3(1) helix along the c axis. These chains are linked via inter­molecular Pb⋯O,N inter­actions, as well as O—H⋯O hydrogen bonds.