Hydrothermal synthesis, crystal structure and photoluminescent properties of a novel 3-D coordination polymer [Cd2(pydc)2(H2O)]n (pydc = pyridine-2,3-dicarboxylate)

A novel 3-D coordination polymer [Cd2(pydc)2(H2O)]n (pydc = pyridine-2,3-dicarboxylate) 1 has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum and the single crystal X-ray diffraction. The title compound consists of two kinds of Cd(II) center with different coordination environments by pydc and aqua ligands, to form a 3-D open framework. Compound 1 display strong fluorescent emission in the solid state at room temperature.