Two-dimensional rare-earth-metal coordination polymers based on biphenyl-3,3 ′ ,5,5 ′ -tetracarboxylic acid displaying luminescence

Two coordination polymers were rationally designed and successfully constructed using the rigid multicarboxylic acid ligand biphenyl-3,3 ′ ,5,5 ′ -tetracarboxylic acid (H4BPTC) and rare earth metal ions (Eu3+ and Ho3+) under solvothermal conditions. The compounds are poly[[tetra- μ 2-acetato-bis( μ 6-biphenyl-3,3 ′ ,5,5 ′ -tetracarboxylato)tetrakis(dimethylacetamide)tetraeuropium(III)] dimethylacetamide disolvate dihydrate], {[Eu4(C16H6O8)2(C2H3O2)4(C4H9NO)4] · 2C4H9NO · 2H2O}n, and poly[[tetra- μ 2-acetato-bis( μ 6-biphenyl-3,3 ′ ,5,5 ′ -tetracarboxylato)tetrakis(dimethylacetamide)tetraholmium(III)] pentahydrate], {[Ho4(C16H6O8)2(C2H3O2)4(C4H9NO)4] · 5H2O}n, Single-crystal X-ray diffraction analysis reveals that both polymers possess a two-dimensional structure and they also display good thermal stability up to ca 280   ° C and photoluminescence with an orange – red light emission.

Source: Acta Crystallographica Section C - June 7, 2022 Category: Chemistry Authors: Zhou, J. Zhang, X. Zi, W. Zhou, L. Tags: two-dimensional coordination polymer luminescence crystal structure rare earth multicarboxylic acid ligands research papers Source Type: research