catena-Poly[[lead(II)-bis-(μ(2)-quinolin-8-ol-ato)-κN,O:O;κO:N,O] N,N-di-methyl-formamide hemisolvate].

The asymmetric unit of the title compound, {[Pb(C(9)H(6)NO)(2)]·0.5C(3)H(7)NO}(n), comprises Pb(quinolate)(2) and half a dimethyl-formamide mol-ecule (which is disordered about a centre of inversion). The quinolate ligands N,O-chelate to a Pb(II) ion and simultaneously bridge a neighbouring Pb(II) ion to form a polymeric chain along [100] comprising Pb-linked Pb(2)O(2) distorted rhombi. These chains pack to form a square grid, with the channels thus defined occupied by the disordered solvent mol-ecules.