Synthesis, characterization, and biological activity of Cd(II) and Mn(II) coordination polymers based on pyridine-2,6-dicarboxylic acid

Abstract

The coordination polymers (CPs) {[Cd(Pydc)(H₂O)₃] · PydcH₂} (I) and [Mn(Pydc)(H₂O)₃] · PydcH2} (II) were obtained by the reaction of CdSO₄ · 5H₂O or MnCl₂ · 4H₂O with pyridine-2,6-dicarboxylic acid (PydcH₂). The structures of the CPs I and II were characterized by IR, UV-Vis, TGA, and X-ray single crystal analysis (CIF files CCDC nos. 1417757 (I), 1417758 (II)). The network structures of I and II are constructed by an infinite number of discrete binuclear molecules and free PydcH2. The structures of the CPs I and II connected by the extensive H-bonds and π–π stacking, forming a 3D-network. The CPs I and II were screened to test their antimicrobial activities against different species of bacteria and fungi.