Poly[(μ2-quinoline-3-carboxylato-κ2N:O)(μ2-quinoline-3-carboxylato-κ3N:O,O′)cadmium]

In the title compound, [Cd(C10H6NO2)2](n), the Cd-II atom is coordinated by three O atoms and two N atoms from four quinoline-3-carboxylate (L-) ligands, leading to a distorted trigonal-bipyramidal geometry. The L- ligands link the Cd-II atoms into a plane parallel to (100), with one ligand being tridentate, coordinating via the N atom and chelating a second Cd atom, and the other being bidentate, bridging two Cd atoms via the N and one O atom.. This two-dimensional network extends into a double-layer network by pi-pi interactions, with centroid-centroid distances of 3.680 (2) and 3.752 (2) angstrom. Another type of pi-pi interaction between pyridine rings [centroid-centroid distance = 3.527 (2) angstrom] leads to a three-dimensional supramolecular architecture.