Poly[(μ4-3-carb­oxy­benzoato-κ5 O 1:O 1,O 1′:O 1′:O 3)(quinolin-8-olato-κ2 N,O)lead(II)]

The asymmetric unit of the title complex, [Pb(C8H5O4)(C9H6NO)]n, comprises a PbII cation, a quinolin-8-olate anion and a 3-carb­oxy­benzoate anion. The coordination geometry of the PbII 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 PbII atoms. The benzoate end of the 3-carb­oxy­benzoate ligand chelates one PbII atom and simultaneously bridges two PbII 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 PbII 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

catena-Poly[[lead(II)-bis­(μ2-quinolin-8-ol­ato)-κ3 N,O:O;κ3 O:N,O] N,N-di­methyl­formamide hemisolvate]

The asymmetric unit of the title compound, {[Pb(C9H6NO)2]·0.5C3H7NO}n, comprises Pb(quinolate)2 and half a dimethyl­formamide mol­ecule (which is disordered about a centre of inversion). The quinolate ligands N,O-chelate to a PbII ion and simultaneously bridge a neighbouring PbII ion to form a polymeric chain along [100] comprising Pb-linked Pb2O2 distorted rhombi. These chains pack to form a square grid, with the channels thus defined occupied by the disordered solvent mol­ecules