Abstract
Two complexes based on the 5-hydroxy-pyridine-2-carboxylic acid (H2L), namely, [Cd(HL)2(H2O)2]n, (1), and [Cd(L)(H2O)]n (2) were characterized by the elemental analysis, infrared spectra, thermogravimetric analysis, and single crystal X-ray diffractions. The structural analyses revealed that complex 1 is a discrete mononuclear unit, which are extended to form 3D supramolecular architectures by hydrogen bonds. Compound 2 is a three dimensional network with a topological Schläfli symbol of {42.63.8}. By adjusting the pH of reaction system, the results indicate that reacting pH plays a vital role in the assembly process of structural transition. The thermal stability and solid-state photoluminescence of compounds 1–2 were further explored.
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