3D Ln-Ag (Ln = Nd; Eu) coordination polymers based on N- and O-donor ligands: Synthesis, crystal structures and luminescence

Two isostructural 3D 4d-4f coordination polymers, Ln2Ag4(OX)(IN)6(H2O)1.5 · 2(ClO4) [Ln = Nd (1); Eu (2), OX = oxalic acid, IN = isonicotinic acid] have been synthesized under hydrothermal conditions. Compounds 1 and 2 are 3D coordination frameworks via 2D layers built by carboxylate groups of isonicotinic acid and oxalate ligands coordinating to metal centers and completing the linear linker by silver ions.