Synthesis and crystal structure of trinuclear zinc coordination polymer based on a triangle flexible carboxylic ligand

Flexible carboxylic ligands have attracted considerable interest due to their excellent stretchable capacity and coordinative ability. In this paper, one new 2D zinc coordination polymer {[Zn(tcpob)2/3(H2O)2/3]·(H2O)2/3}n with trinuclear zinc cluster units was prepared under hydrothermal conditions based on 1,3,5-tri(4-carboxyphenoxy)benzene ligand. In addition, the solid-state photoluminescent spectra were measured at room temperature.

Graphical abstractSelf-assembly of a triangle flexible carboxylic acid and Zn salt under solvothermal conditions generated a new 2D coordination polymer with trinuclear zinc cluster units.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Triangle flexible carboxylic ligand acts as the bridging ligand. ► Characterization by elemental analysis, IR, PXRD and X-ray crystallography. ► AB stacking structure including trinuclear zinc cluster units. ► Emission of the complex is attributed to charge transfer of internal ligand.