Variable Dimensionality of Europium(III) and Terbium(III) Coordination Compounds with a Flexible Hexacarboxylate Ligand
oleh: Xiaolin Yu, Dmitry I. Pavlov, Alexey A. Ryadun, Andrei S. Potapov, Vladimir P. Fedin
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2022-11-01 |
Deskripsi
A reaction between 4,4′,4″-(benzene-1,3,5-triyltris(oxy))triphthalic acid (H<sub>6</sub>L) and lanthanide(III) nitrates (Ln = Eu<sup>3+</sup>, Tb<sup>3+</sup>) in water under the same conditions gave a molecular coordination compound [Tb(H<sub>4.5</sub>L)<sub>2</sub>(H<sub>2</sub>O)<sub>5</sub>]∙6H<sub>2</sub>O in the case of terbium(III) and a one-dimensional linear coordination polymer {[Eu<sub>2</sub>(H<sub>3</sub>L)<sub>2</sub>(H<sub>2</sub>O)<sub>6</sub>]∙8H<sub>2</sub>O}<sub>n</sub> in the case of europium(III). The crystal structures of both compounds were established by single-crystal X-ray diffraction, and they were further characterized by powder X-ray diffraction, thermogravimetric analysis and infrared spectroscopy. The compounds demonstrated characteristic lanthanide-centered photoluminescence. The lanthanide-dependent dimensionality of the synthesized compounds, which are the first examples of the coordination compounds of hexacarboxylic acid H<sub>6</sub>L demonstrates its potential as a linker for new coordination polymers.