Zinc(II) and Cadmium(II) coordination polymers constructed from phenylenediacetate ligands

ABSTRACTA series of new coordination polymers {[Zn(μ-opda)(μ-bpa)]·2H2O}n (1), [Zn(μ3-ppda)(μ-bpa)]n (2), [Cd(μ3-ppda)(μ-bpa)]n (3), [Cd(μ3-mpda)(μ-bpa)]n (4) and [Cd(μ3-mpda)(μ-bipy)]n (5), (o/m/ppda=1,2/1,3/1,4-phenylenediacetate, bpa=1,2-bi(4-pyridyl)ethane, bipy=4,4′-bipyridine) were synthesized. Their structures were characterized by elemental analysis, IR spectroscopy, single-crystal and powder X-ray diffraction. Furthermore, the effect of metal sources (zinc acetate and zinc oxide) and acidity of the solution on the structure of the coordination polymers was discussed for complexes 1 and 5, respectively. The single-crystal X-ray crystallographic studies revealed that complexes 1, 3, 4 and 5 are uninodal (4)-connected 2D frameworks and display sql topology with the point symbol of (44.62). Complex 2 is 3D coordination polymer and exhibits pcu topology with the point symbol of (412.63). In addition, the luminescent properties and thermal behavior of all complexes were also investigated.

Graphical abstractScheme 1. Topologies of Coordination Polymers Reported in This Paper.Figure optionsDownload full-size imageDownload as PowerPoint slide