Poly[(μ(4)-3-carb­oxy­benzoato-κ(5) O (1):O (1),O (1′):O (1′):O (3))(quinolin-8-olato-κ(2) N,O)lead(II)]

The asymmetric unit of the title complex, [Pb(C(8)H(5)O(4))(C(9)H(6)NO)](n), comprises a Pb(II) cation, a quinolin-8-olate anion and a 3-carb­oxy­benzoate anion. The coordination geometry of the Pb(II) atom is defined by one N and six O atoms, as well as a stereochemically active lone pair of electrons, and is based on a Ψ-dodeca­hedron. The quinolin-8-olate is chelating and the 3-carb­oxy­benzoate anion forms bonds to four different Pb(II) atoms. The benzoate end of the 3-carb­oxy­benzoate ligand chelates one Pb(II) atom and simultaneously bridges two Pb(II) atoms on either side, forming a chain along the b axis. The carboxyl end of the 3-carb­oxy­benzoate connects to a neighbouring chain by employing its carbonyl atom to form a bond to a Pb(II) atom and the hydroxyl group to form a hydrogen bond to a quinolin-8-olate O atom. Thereby, a layer is formed in the bc plane.