The paper describes the synthesis of iron (II) complexes bearing new polydentate N, O- coordinating pyridyl ligands and their catalytic application in oxidation reactions employing peroxides as the oxidants. The tridentate N, O, N (10) and N, N, O (11) ligands, the tetradentate N, N, O, N ligand 12 and the pentadentate N, N, N, O, N-coordinating ligand 16 were synthesized, and obtained as oils or solids in 74–93% isolated yields. The ligands ...