Three 3D Lanthanide coordination polymers: Synthesis, luminescence and magnetic properties

Three 3D structures coordination polymers: [Ln(C2O4)(CH3COO)(H2O)]n (Ln = Gd, Eu, Tb) featuring a three-dimensional (3D) structure were synthesized with light-weight ligands. 1Gd owing to the higher magnetic density based on the large mass ratio (metal/ligands) and 3D structures, shows good MCE with −ΔSmmax = 39.5 J kg−1 K−1 at 2 K and ΔH = 7 T. Meanwhile, the luminescence properties and luminescence decay of 2Tb and 3Eu were investigated, the results showed that 2Tb and 3Eu present characteristic emissions of EuIII and TbIII ions.