Spin-labelled cyclometallated palladium complexes. EPR study of dynamic processes in coordination sphere

► The typical values of phosphorous for apical and basal phosphane ligands were obtained. ► o-Semiquinonato palladium pincer complexes can be five- or four-coordinated. ► Pincer ligand can be bi- or tridentate bonded correspondingly. ► The type of the coordination depends on pincer ligand nature.