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

Abstract Reactions of four different tetrazole-containing carboxylic acids and 4,4′bipyridine with ZnCl 2 ·6H 2 O, produced four new coordination compounds, [Zn(pytza) 2 (4,4′-bipy)(H 2 O) 2 ]·2H 2 O ( 1 ), (pytza = 5-(3-pyridyl)tetrazole-2-acetato), [Zn(tzpya) 2 (4,4′-bipy)(H 2 O) 2 ]·8H 2 O ( 2 ) (tzpya = 4-(5-tetrazolyl)pyridine-1-acetato), [Zn(4,4′-bipy)(H 2 O) 4 ]·2(pztza)·2H 2 O ( 3 ) (pztza = 5-(2-pyrazinyl)tetrazole-2-acetato). [Zn(atza) 2 (4,4′-bipy) 0.5 ·H 2 O] ( 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.