Abstract
Five new 4,5‐dichlorophthalate (dcpa)‐extended lanthanide coordination polymers (CPs) with formulas [Ln2(H2O)(dcpa)3]n (Ln = Tb for 1, Sm for 2, Pr for 3, and Nd for 4) and [Yb(H2O)2(dcpa)(Hdcpa)]n (5) were solvothermally synthesized. Structural determinations demonstrate that CPs 1–4 are crystallographically isostructural, exhibiting an infinite two‐dimensional layer with dimeric {Ln2(COO)3} subunits extended by aromatic skeleton of fully deprotonated dcpa2– connectors. In contrast, complex 5 features a one‐dimensional broad ribbon with centrosymmetric {Yb2(COO)2} subunits propagated by pairs of ditopic dcpa2– ligands. Interestingly, the anionic dcpa2– connector can serve as a good antenna ligand to sensitize the characteristic emissions of the different LnIII ions in both the ultraviolet (for 1–3) and near‐infrared (for 4 and 5) regions.
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