Observation of Structural Diversity Based on the Cationic Influence in a Series of Zn/Cd Pyridine Carboxylate Coordination Compounds

In this study, we used a 6-methyl-2,3-pyridine dicarboxylate ligand to develop the frameworks. Two novel compounds, [Zn2(L)2(H2O)4] (1) and [Cd(L)(H2O)] (2) (where L = 6-methyl-pyridine-2,3-dicarboxylate) were produced. The compounds characterized by elemental analysis, powder X-ray diffraction, Fourier-transform infrared spectroscopy single crystal crystallography. We successfully tuned framework dimensionality varying size of metal ions from small Zn large Cd ions. Single investigations compound 1 show good dimeric motif, while 2 shows 2D network. 1, units are further bonded strong hydrogen bonds create 3D network whereas produces layer that in turn connects via short contacts form crystallographic space.