Two ligands-based europium luminescent coordination polymer, Eu2(PZDC)(PDC)2(H2O)6

The title compound, europium pyrazine- and pyridine-dicarboxylate hexahydrate, Eu 2 (C 6 H 2 N 2 O 4 )(C 7 H 3 NO 4 ) 2 (H 2 O) 6 , has been synthesized from hydrothermal route. Its crystal structure has been determined from single-crystal X-ray diffraction. The coordination compound is built from tetramers of Eu and pyridine ligands that are linked by pyrazine ligands. These entities form layers that are pillared through hydrogen bonds . The compound possesses a bright red emission due to Eu 3+ cation even in the presence of vibrators such as water molecules. • New 2D layered coordination polymer synthesized by hydrothermal route • Coordination polymer built from association of 2,5-pyrazinedicarboxylate and 2,5-pyridinedicarboxylate ligands • Structure determination and refinement from single-crystal X-ray diffraction data • IR and UV–vis spectroscopic characterizations • Lanthanide (Eu) based luminescence evidenced by excitation and emission UV–vis spectro-fluorometry experiments