Cu(II) complexes of pyridine-2,6-dicarboxylate and N-donor neutral ligands: Synthesis, crystal structure, thermal behavior, DFT calculation and effect of aromatic compounds on their fluorescence

Two pyridine-2,6-dicarboxylate copper(II) complexes with N-donor neutral ligands (imidazole and 2-aminopyridine) were synthesized and characterized. The effect of neutral aromatic compounds on the fluorescent properties of these metal complexes has been examined in water-methanol solution. DFT calculations on the isolated complexes are in good agreement with structural results obtained by X-ray diffraction.