Construction of Zn(II)/Cd(II) coordination polymers derived from a tetrazole derivative: Syntheses, structures and luminescent properties

•Complex 1 possesses an infinite 1D coordination chain.•Both of complexes 2 and 3 feature an 8-fold interpenetrating 4-connected 3D framework with the dia topological net.

Three new coordination polymers [Zn(Htip)Cl(H2O)]n (1), [Zn(Htip)2]n (2) and [Cd(Htip)2]n·2nH2O (3) were synthesized by reactions of Zn(II)/Cd(II) salts with a multidentate tetrazole-based ligand 2-(4-(tetrazol-5-yl)phenyl)imidazo(4,5-f)(1,10)phenanthroline (H2tip). Complex 1 possesses an infinite 1D coordination chain, and further forms the final 3D supramolecule through π⋯π stacking interactions. Complexes 2 and 3 are isomorphous, and both of them feature an 8-fold interpenetrating 4-connected 3D framework with the dia topological net and the Schläfli symbol of {66}. In 1–3, the Htip− ligand links two metal centers through three terminal N-donors. The structural analyses indicate that the anions and solvents can subtly influence the formation of the resulting network. Moreover, the thermal stabilities and photoluminescent properties of 1–3 are investigated in the solid state.

Graphical abstractThree new Zn(II)/Cd(II) coordination polymers based on a multidentate tetrazole-containing ligand have been successfully synthesized. The structural analyses indicate that the anions and solvents can subtly influence the formation of the resulting network.Figure optionsDownload full-size imageDownload as PowerPoint slide