(Benzene-1,2,4,5-tetrayl)tetrakis(3-(1-carboxylatomethylpyridinium)), a novel uranyl-complexing tetrazwitterion

Australian Journal of Chemistry, Journal Year: 2024, Volume and Issue: 77(11)

Published: Oct. 22, 2024

The tetrazwitterionic, tetracarboxylate (benzene-1,2,4,5-tetrayl)tetrakis(3-(1-carboxylatomethylpyridinium)) (L) has been synthesized and used as a ligand in mixed-ligand complexes of the uranyl cation involving anionic carboxylates. {[(UO2)2(tdc)2(L)]·2H2O}n (1), where tdc2– is 2,5-thiophenedicarboxylate, crystallizes monoperiodic, ladder-like coordination polymer which two UO2(tdc) rows are bridged by L ligands with monodentate carboxylate groups. {[(UO2)2(OH)4(L)]·2H2O}n (2) diperiodic dinuclear (UO2)2(OH)22+ units nodes square lattice (sql) network being bound its four positional isomer (benzene-1,2,4,5-tetrayl)tetrakis(4-(1-carboxylatomethylpyridinium)) (L′) undergoes decarboxylation during synthesis under solvo-hydrothermal conditions, giving tetracationic (benzene-1,2,4,5-tetrayl)tetra{4-(N-methylpyridinium)} (btp4+) included counterion [btp][(UO2)4(O)2(pht)4]·1.5H2O (3), pht2– phthalate. discrete, tetranuclear 3 usual form μ3-oxo bridges alternating anions cations linked through π–π interactions arranged into layers.

Language: Английский

Triperiodic frameworks in the uranyl–2,5-thiophenedicarboxylate system: Effect of unidentate auxiliary ligands

Polyhedron, Journal Year: 2024, Volume and Issue: unknown, P. 117307 - 117307

Published: Nov. 1, 2024

Language: Английский