In the centrosymmetric polymeric title compound, {[CoGd 2(C 14H 8N 2O 5) 4(H 2O) 4]·4H 2O} n, the Gd III cation is coordinated by one water molecule and four pyridine-4-carboxamido-isophthalate (L) anions in a distorted square-anti-prismatic arrangement, while the Co II cation, located on an inversion center, is coordinated by two pyridyl-N atoms, two carboxylate-O atoms and two water molecules in a distorted octa-hedral geometry. The asymmetric unit contains two anionic L ligands: one bridges two Gd cations and one Co cation through two carbo...
