Structure-directing roles of phenylenediacetate ligands in the formation of N,N′-di(3-pyridyl)adipoamide-based coordination networks

The pda2− ligands in complexes 1, 2 and 5 adopt the μ3 bonding mode to afford the 2D layer structures, while those in the other complexes show the μ4 and/or μ2 bonding modes to build the 3D frameworks.132