Hydrothermal synthesis and crystal structure of four lead(II) coordination polymers with a carboxylate functionalized imidazophenanthroline derivative ligand

Four new Pb(II) coordination polymers have been synthesized by changing auxiliary ligands under hydrothermal conditions. Complex 1 exhibits a 2D layer structure. Complexes 2 and 3 feature a 1D loop-and-chain structure. Complex 4 has the dinuclear parallelogram of [Pb2O2] and shows a 2D layer structure.