Syntheses,structures,and properties of three coordination polymers based on 5-ethylpyridine-2,3-dicarboxylic acid and N-containing ligands
Three coordination polymers[Mn(epda)(2,2'-bipy)(H2O)](1),[Mn(epda)(phen)](2),and[Co2(epda)2(bpe)2(H2O)4]·5H2O(3)(H2epda=5-ethyl-pyridine-2,3-dicarboxylic acid,2,2'-bipy=2,2'-bipyridine,phen=phenanthroline,bpe=1,2-bis(4-pyridyl)ethylene)were synthesized by solvothermal reactions and characterized by single-crystal X-ray diffraction,thermogravimetric analyses,IR spectroscopy and elemental analysis.1 displays a 1D chain struc-ture,and these chains are joined by O—H…O hydrogen bonding and π-π stacking interactions to generate a 2D layer structure.2 displays a 2D layer structure,and adjacent layers are generated 3D architecture through π-πstacking interactions.3 displays a 1D chain structure,and adjacent chains are generated double layer structure through O—H…O hydrogen bonding.The fluorescent properties of 1 and 3 indicate that they can potentially be used as a luminescent sensor.1 was highly selective and sensitive towards o-nitrophenol through different detection mechanisms,however,3 was highly selective and sensitive towards 2,4,6-trinitrophenol.In addition,the magnetic behavior of 2 has also been investigated.CCDC:2172533,1,2355773,2,2355774,3.
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