Design and synthesis of two luminescent Zn(II)-based coordination polymers with different structures regulated by different solvent system

• 5-(6-carboxypyridin-2-yl)isophthalic acid has been used in the synthesis of CPs.
• Two CPs of H3L have been synthesized in different solvent system.
• The complexes may act as the potential optical material.

Two new coordination polymers (CPs) [Zn(HL)(H2O)]n (1) and [Zn3(L)2(H2O)2]n·(H2O)n (2), based on a multifunctional ligand combined carboxylate groups and a nitrogen donor group 5-(6-carboxypyridin-2-yl)isophthalic acid (H3L), have been synthesized under different solvent media and fully characterized by powder X-ray diffraction (PXRD), infrared (IR) spectra, elemental analyses (EA) and thermogravimetric analyses (TGA). Single-crystal X-ray diffraction analysis reveals that 1 shows 1D dimeric chain structure, while 2 gives a 3D dense packing framework. Topology analysis illustrates that 2 can be simplified as a 3-nodal net (4, 5, 6-connected net) with the point symbol of {44·62}{46·64}2{48·66·8}. In addition, solid state luminescent properties of two complexes have also been studied in detail, which may act as the potential optical materials.

Two new coordination polymers (CPs) Zn(HL)(H2O) (1) and Zn3(L)2(H2O)2·(H2O)n (2), based on a multifunctional ligand combined carboxylate groups and a nitrogen donor group 5-(6-carboxypyridin-2-yl)isophthalic acid (H3L), have been synthesized under different solvent media. Moreover, solid-state luminescent properties of two complexes have also been studied in detail, which may act as the potential optical materials.Figure optionsDownload as PowerPoint slide