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Two isostructural coordination polymers built by a new bridging chelating ligand: hydrothermal synthesis, crystal structure and photoluminescence

Two new isostructural coordination polymers [Cd(Hadab)(H2O)] (1) and [Mn(Hadab)(H2O)] (2) (H3adab  = 3-aminodiacetic benzoic acid) have been synthesized under hydrothermal conditions and characterized by X-ray single crystal analyses, IR spectra and TGA. Compounds 1 and 2 crystallize in the monoclinic space group C2/c and are a 2D network. The 3D pillar-layered networks are constructed by hydrogen bonding interactions between benzoic acid groups. Compound 1 displays intense room temperature photoluminescence in the solid state.