Syntheses, crystal structures, and luminescence of carboxylato-bridged coordination compounds

Two 2-D metal carboxylate coordination compounds [Tb(pydc)(ox)1/2(H2O)2] (1) and [Cd(pydc)(me)(H2O)]2 · H2O (2) (pyridine-2,5-dicarboxylic acid = pydc, oxalic acid = ox, me = methanol) have been synthesized under hydrothermal conditions. Carboxylates are building blocks in the formation of zigzag chain and cockle stair-like chain structures for 1 and 2, respectively. Both the compounds have been structurally determined by single-crystal X-ray diffraction, and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis, and fluorescence spectra.