One-dimensional copper(II) coordination polymers based on carboxylate anions and rigid pyridyl-donor ligands

► Different nitrogen ligands lead to two supramolecular structures. ► The use of linear bipy ligand preserves the original paddle-wheel SBU. ► The presence of bpe ligand induces the carboxylate monodentate coordination mode. ► C-H···O hydrogen bonds seem to control the crystal packing.