New ternary lanthanide coordination polymers of 1,4-naphthalenedicarboxylate with 1,10-phenanthroline

The asymmetric unit consists of two chemically independent lanthanide ions. And the lanthanide ions are arranged to a two-dimensional square grid structure through the bridging of 1,4-naphthalenedicarboxylate with different coordination modes, and the adjacent layers are further linked via O-H⋯O hydrogen bonds to a three-dimensional supramolecular architecture.