| Abstract |
Three new 2D lanthanide-organic networks, \[Sm-2(mu(4)-cpta)(mu(5)-cpta)(H2O)(3)]center dot 3H(2)O\(n) (1) and [Ln(mu(3)-cpta)(phen)(H2O)(2)](n) (Ln = Tb (2) and Sm (3)), were successfully synthesized via hydrothermal reactions using Ln(NO3)(3)center dot 6H(2)O, a flexible ether-bridged tricarboxylic acid H(3)cpta (2-(2-carboxyphenoxy)terephthalic acid) as a principal building block, and phen (1,10-phenanthroline) as an optional supporting ligand. All products were obtained as air and thermally stable microcrystalline solids and fully characterized by standard solid-state techniques, including elemental analysis, TGA, IR spectroscopy, powder and single-crystal X-ray diffraction. Compound 1 possesses an intricate 2D layer structure with the 4,5L51 topology, which is driven by the mu(4)- and mu(5)-cpta(3) and Sm(III) nodes. Compounds 2 and 3 are isostructural and disclose a different 2D metal-organic network with the fes topology, which is assembled from the mu(3)-cpta(3) and Ln(III) nodes. Luminescence properties of 2 and derived M(n+)2 suspensions were investigated, disclosing a possible use of this compound as a notable luminescence sensor for the detection of Fe3+ cations in aqueous medium. (C) 2017 Elsevier B.V. All rights reserved. |
