Four new zinc coordination compounds derived from various tetrazole-containing carboxylic acids and 4,4′-bipyridine

• Four new zinc coordination compounds were prepared.
• The four complexes show 1D or 2D structures.
• The luminescent properties were investigated.

Reactions of four different tetrazole-containing carboxylic acids and 4,4′bipyridine with ZnCl2·6H2O, produced four new coordination compounds, [Zn(pytza)2(4,4′-bipy)(H2O)2]·2H2O (1), (pytza = 5-(3-pyridyl)tetrazole-2-acetato), [Zn(tzpya)2(4,4′-bipy)(H2O)2]·8H2O (2) (tzpya = 4-(5-tetrazolyl)pyridine-1-acetato), [Zn(4,4′-bipy)(H2O)4]·2(pztza)·2H2O (3) (pztza = 5-(2-pyrazinyl)tetrazole-2-acetato). [Zn(atza)2(4,4′-bipy)0.5·H2O] (4) (atza = 5-aminotetrazole-1-acetato). These compounds were structurally characterized by elemental analysis, IR spectroscopy, UV–Vis spectroscopy, thermogravimetric analysis and single crystal X-ray diffraction. The X-ray diffraction reveals that compounds 1–3 display 1D polymeric chains while 4 shows a 2D layer structure. Compounds 1–4 are self-assembled to form 3D networks by hydrogen bonding interactions. Furthermore, the luminescent properties were also investigated at room temperature in the solid state.

Four new zinc coordination polymers [Zn(pytza)2(4,4′-bipy)(H2O)2]·2H2O (1), [Zn(tzpya)2(4,4′-bipy)(H2O)2]·8H2O (2), [Zn(4,4′-bipy)(H2O)4]·2(pztza)·2H2O (3), [Zn(atza)2(4,4′-bipy)0.5·H2O] (4) were successfully constructed. The luminescent properties were also investigated at room temperature in the solid state.Figure optionsDownload as PowerPoint slide