Polyhedron
Polyhedron
3 years ago

Syntheses, structures, photoluminescence, and magnetism of a series of lanthanide 1,3-adamantanedicarboxylate coordination polymers

Syntheses, structures, photoluminescence, and magnetism of a series of lanthanide 1,3-adamantanedicarboxylate coordination polymers
Five one-dimensional (1D) lanthanide dicarboxylate coordination polymers (CPs) have been successfully synthesized under hydrothermal conditions, namely, [Ln2(1,3-adc)3(H2O)4]·xH2O [Ln=Eu (1, x =1), Tb (2, x =1), Dy (3, x =2), and Er (4, x =1), 1,3-H2adc=1,3-adamantanedicarboxylic acid] and [Yb(1,3-adc)(1,3-Hadc)(H2O)3]·H2O (5). Structural characterization reveals that CPs 1–4 exhibit isostructural 1D chain formed by 1,3-adc linking alternately two mononuclear Ln(COO)4 units and one dinuclear Ln2(COO)4 cluster. CP 5 shows a 1D zigzag chain constructed from 1,3-adc connecting Yb(III), and the 1,3-Hadc anions are regularly arranged on two sides of the 1D chain. In 1–5, the neighboring 1D chains are extended into a two-dimensional (2D) supramolecular layer by hydrogen-bonding interactions. Property investigation indicates that CPs 1–3 and 5 display characteristic luminescence of the Eu(III), Tb(III), Dy(III), and Yb(III) ions, respectively. CP 3 shows a field-induced slow magnetic relaxation behavior.

Publisher URL: www.sciencedirect.com/science

DOI: S0277538717305922

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