Hydrothermal in situ ligand synthesis and self-assembly of a 3D pillar–layer framework with 2-fold interpenetrated pcu topology

•Hydrothermal in situ HATAZ ligand synthesis•New Zn(II) coordination polymer based on pbdc and ATAZ•It emits intense luminescence at room temperature.

A new compound, namely [Zn1.5(pbdc)(ATAZ)(OH)]n (1 H2pbdc = terephthalic acid, HATAZ = 3-amino-1,2,4-triazole), has been obtained by in situ aminotriazole ligand synthesis and characterized by elemental analysis, thermal analysis, as well as single crystal and powder X-ray diffraction analysis. Compound 1 exhibits a 3D pillar–layer framework based on Zn(II)-aminotriazole layers and pbdc pillars, which can be simplified into a 2-fold interpenetrated pcu topological network. Interestingly, two ATAZ ligands and two OH− ligands bridge three Zn(II) ions together, giving rise to a new trinuclear {Zn3(ATAZ)2(OH)2} subunit. In addition, the luminescent and thermal stability properties for the title compound have also been studied.

Graphical abstractPresented here is a new luminescent Zn(II) coordination polymer, namely [Zn3(pbdc)(ATAZ)(OH)2]n (1 H2pbdc = terephthalic acid, HATAZ = 3-amino-1,2,4-triazole), which was constructed from H2pbdc and in situ generated HATAZ ligands.Figure optionsDownload full-size imageDownload as PowerPoint slide