A Series of Three-Dimensional 4d−4f Heterometallic Coordination Polymers with Six-Connected Doubly Interpenetrated pcu Net Topology: Structural, Photoluminescent, and Magnetic Properties

A series of lanthanide(III)-Ag(I) 4d−4f heterometallic coordination polymers (HCPs) with pcu topology, {[LnIIIAgI(Hbidc)(bidc)(ox)0.5(H2O)]·H2O}n (Ln = Sm 1, Eu 2, Gd 3, Tb 4, Dy 5, Ho 6, Er 7, H2bidc =1H-benzimidazole-5,6-dicarboxylic acid, ox = oxalate), have been synthesized through self-assembly reactions. All seven complexes are isostructural and have three-dimensional 2-fold interpenetrated structures, with both the organic ligand and oxalate groups acting as bridges. These new complexes crystallize with the same unique six-connected three-nodal net described by (108·12·164·182) (10)6 topology. The ferromagnetic properties of complex 3 were investigated. Moreover, complexes 1, 2, 4, and 5 exhibit very strong photoluminescence properties and with long lifetimes in the solid state at room temperature.